tree cb07f781107175b2a2864ed9299a86f8dd9be762
parent e8f1876aa6772077f85f380677b30251c2454505
author Ghanshyam Mann <gmann@ghanshyammann.com> 1588639897 -0500
committer Ghanshyam Mann <gmann@ghanshyammann.com> 1588642871 +0000

Add document for stable branch testing for tempest plugins

As Tempest and plugins master version is used to test the supported
stable branches, we need to test them on master gate.

Adding document for that so that we can test the stable branches
more consistently on plugins side too.

Change-Id: Ied3c6bb4032fd3740ae0d6d185e4a138fd335b02