Replace uber workaround jar file by individual bundles (features)

The goal of this pull request is to replace uber workaround jar file by individual bundles for OSGI platform.

The request contains : 

- Replacement of uber workaround jar file by individual bundles (core, compiler, kie-api, kie-interna) in features file used to provision Apache Karaf project, 
- Add of missing bundles required by drools (jaxb-impl, jaxb-xjc)
- Remove non required dependencies for drools-camel-example