Description of problem:
A patch landed upstream to always install yum-plugin-priorities in the overcloud-full image. This does not work for OSP due to yum-plugin-priorities only existing in the Optional channel. Since it's optional, OSP is not allowed to use that package.
Version-Release number of selected component (if applicable):
build fails with "package not available" for yum-plugin-priorities
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.