* It removes magnum tempest plugin reference in favour of using
newly magnum-tempest-plugin.
* We removed tempest tests resides under functional.api.v1.test-*
files as they are tempest tests and keeping the rest as they are
used by functional tests.
Depends-On: Ibdddd26da9cfb0d08c2977660320b2c052d7261b
Change-Id: Ida2fa1ef5880ebead787e3b27ac7ebf5aa498f62