Stream destroy fails to remove if the underlying modules have been removed.

In short if you attempt to destroy a stream that has had its modules removed, the destroy will fail.
1) So if I create my own processor:x and use the processor in a stream.
2) I then shutdown the admin and container.
3) Delete the processor:x from the $XD_HOME/modules directory
4) Restart the admin and container.
5) if you do a stream list the stream that used the processor.x is still present.
6) but you can not delete the stream because of the exception below.

[To Reproduce using Payload Conversion example]
1) Follow the instructions to install and use the myTupleProcessor module in a stream.
2) Now shutdown the admin and container
3) rm -rf $XD_HOME/modules/processor/myTupleProcessor.xml
4) rm -rf $XD_HOME/lib/payload-conversion.jar
5) Startup your admin and container
6) stream all destroy. Then type 'y'<return>
6a) The shell will report ommand failed org.springframework.xd.rest.client.impl.SpringXDException: No content to map due to end-of-input at [Source: [email protected]; line: 1, column: 1]
6b) The Admin Server will report
11:59:43,543 ERROR http-nio-9393-exec-1 rest.RestControllerAdvice:199 - Caught exception while handling a request
org.springframework.xd.dirt.zookeeper.ZooKeeperAccessException: No content to map due to end-of-input
at [Source: [email protected]; line: 1, column: 1]
at org.springframework.xd.dirt.zookeeper.ZooKeeperUtils.wrapThrowable(ZooKeeperUtils.java:47)
at org.springframework.xd.dirt.zookeeper.ZooKeeperUtils.wrapThrowable(ZooKeeperUtils.java:31)
at org.springframework.xd.dirt.zookeeper.ZooKeeperUtils.wrapAndThrowIgnoring(ZooKeeperUtils.java:65)
at org.springframework.xd.dirt.module.store.ZooKeeperModuleDefinitionRepository.findByNameAndType(ZooKeeperModuleDefinitionRepository.java:95)
at org.springframework.xd.dirt.stream.XDStreamParser.resolveModuleType(XDStreamParser.java:300)
at org.springframework.xd.dirt.stream.XDStreamParser.determineType(XDStreamParser.java:196)
at org.springframework.xd.dirt.stream.XDStreamParser.parse(XDStreamParser.java:152)
at org.springframework.xd.dirt.stream.StreamDeployer.beforeDelete(StreamDeployer.java:116)
at org.springframework.xd.dirt.stream.StreamDeployer.beforeDelete(StreamDeployer.java:43)
at org.springframework.xd.dirt.stream.AbstractDeployer.delete(AbstractDeployer.java:246)
at org.springframework.xd.dirt.stream.AbstractDeployer.deleteAll(AbstractDeployer.java:169)
at org.springframework.xd.dirt.stream.AbstractInstancePersistingDeployer.deleteAll(AbstractInstancePersistingDeployer.java:100)
at org.springframework.xd.dirt.rest.XDController.deleteAll(XDController.java:110)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:215)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:749)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:689)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:83)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:938)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:870)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:961)
at org.springframework.web.servlet.FrameworkServlet.doDelete(FrameworkServlet.java:885)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:653)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:837)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.springframework.boot.actuate.trace.WebRequestTraceFilter.doFilter(WebRequestTraceFilter.java:115)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.springframework.boot.actuate.autoconfigure.EndpointWebMvcAutoConfiguration$ApplicationContextFilterConfiguration$1.doFilterInternal(EndpointWebMvcAutoConfiguration.java:137)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:108)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:108)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:88)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:108)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.springframework.boot.actuate.autoconfigure.MetricFilterAutoConfiguration$MetricsFilter.doFilterInternal(MetricFilterAutoConfiguration.java:85)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:108)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.valves.RemoteIpValve.invoke(RemoteIpValve.java:680)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1680)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:724)
Caused by: com.fasterxml.jackson.databind.JsonMappingException: No content to map due to end-of-input
at [Source: [email protected]; line: 1, column: 1]
at com.fasterxml.jackson.databind.JsonMappingException.from(JsonMappingException.java:164)
at com.fasterxml.jackson.databind.ObjectMapper._initForReading(ObjectMapper.java:3036)
at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:2978)
at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:2098)
at org.springframework.xd.dirt.module.store.ZooKeeperModuleDefinitionRepository.findByNameAndType(ZooKeeperModuleDefinitionRepository.java:82)
... 61 more