Provide configuration properties for configuring an ActiveMQ connection factory that uses SSL

[sh930108]

Springboot has no place to configure SSL related parameters and certificates for Activemq，Springboot activemq supports SSL connections by default？

[wilkinsona]

There's no property based support for configuring a connection factory that uses SSL with a custom keystore or custom truststore. You can, however, provide your own ActiveMQSslConnectionFactory bean and keep the rest of the auto-configuration.

[philwebb]

I've opened #17589 for us to consider more broadly how we should support SSL.