Add RPM package dependencies needed for Barbican nodes post oslo.msg/pbr.

Add FPM packaging of olso.messaging and other dependencies after pbr,
moving to oslo.messaging from oslo-incubator, and global requirements.
Also updated RPM SPEC file dependencies accordingly.

Change-Id: I0eb8489d60cdffd630b2f2ffbcb9e7c822d7fa7a
Merge "Add RPM package dependencies needed for Barbican nodes post oslo.msg/pbr."