Removed the content-identity-auth-2_0 filter.
Removed the JacksonJaxbTransform since it was only in use by the content-identity-auth-2.0.
Removed the now unnecessary service-authentication filter.
Merge pull request #1191 from rackerlabs/REP-1248_Remove_content-identity-auth-2_0

REP-1248 Removed the content-identity-auth-2.0 filter.
Merge remote-tracking branch 'origin/master' into REP-1158_core_spring