Updated JVMP Jetty9 dependency to 0.5.2
Updated JVMP Jetty9 dependency to 0.5.2

This commit updates the jvm-puppet project's dependency on
trapperkeeper-webservices-jetty9 to version 0.5.2.

puppetlabs/ezbake,puppetlabs/ezbake,puppetlabs/ezbake