OZP-76 Divided our JPA feature into 2 features: One feature provides our JPA implementation bundles (ozone-jpa), the other provides the implementation of the JPA spec (open-jpa). This stopped Karaf from hanging when uninstalling our JPA feature. Modified the features boot to start up both "open-jpa" then "ozone-jpa"
OZP-664: Merged with Master Branch