Use infra centos 7 beaker jobs
Use infra centos 7 beaker jobs

These jobs are different than the base puppet beaker rspec jobs because
they have different required projects. Port over to using the infra
specific jobs on infra projects so the correct required projects are
used.

Change-Id: I65835f64780ef344c00dc1d2d3b645e6c6d60529
Depends-On: I4b1455dcfbc2f242fd9028c23d78beea1841e44f

openstack-infra/project-config,openstack-infra/project-config