Add post for 2.21.0 GA
Add post for 2.21.0 GA

pulp/pulpproject.org,dkliban/pulpproject.org,pulp/pulpproject.org,bmbouter/pulpproject.org,dkliban/pulpproject.org,bmbouter/pulpproject.org,dkliban/pulpproject.org,bmbouter/pulpproject.org,bmbouter/pulpproject.org,pulp/pulpproject.org,pulp/pulpproject.org,dkliban/pulpproject.org