Add support for "javaMailProperties" property when installing email provider

<bean ...>
<property name="javaMailProperties">
  <props> 
    <prop key="mail.smtp.auth">true</prop>
    <prop key="mail.smtp.socketFactory.port">465</prop>
    <prop key="mail.smtp.socketFactory.class">javax.net.ssl.SSLSocketFactory</prop>
    <prop key="mail.smtp.socketFactory.fallback">false</prop>
  </props>
</property> 
</bean>