Inherit tempest-extra-tests job from tempest-full-py3

tempest-extra-tests job run the admin and negative tests for
now which need same config what tempest-full-py3 job already
have. Inheriting tempest-extra-tests job from tempest-full-py3
for the same reason.

Change-Id: Idad488abb9cb6bd982f0193e7a2cc411156dd034
1 file changed