Use tempest-pg-full

The legacy job legacy-tempest-dsvm-neutron-pg-full is now named
tempest-pg-full - using the new tempest and Zuul v3 frameworks.

Change experimental job to use new job.

Change-Id: If16397724fb4facd2a0db8148bdf7ba427ca10b6
Depends-On: https://review.openstack.org/609530
1 file changed