This patch propose to use heat tempest plugin for potential
co-gating integration tests.
These tests are consider as potential co-gating. And we now
already maintain them in heat tempest plugin.
This also disables all except two of the gate/test jobs, to enable us to
land this series and stop the carnage. The jobs will be re-enabled once
all of the duplicated tests have been eliminated.
Change-Id: I55e204b72cd5a2876576852b10ad09f24d04beb4