Bug 2002: Classpath error when loading neutron northbound api

Add the org.eclipse.persistence.antlr to the odl-pseristence feture. There are weird timing issues where if the antlr bundle is not loaded before core and moxy then the classes in antlr cannot be found.

Change-Id: I8fd30b5fb215b8a25512deac45e80099c91c539e
Signed-off-by: Sam Hague <shague@redhat.com>
Merge "Bug 2002: Classpath error when loading neutron northbound api" into stable/helium