Make infra beaker rspec job for centos 7 nodes

The infra beaker rspec jobs have different required projects than the
base beaker rspec jobs. Convert the centos 7 job for infra over to
include the infra required projects.

Change-Id: I4b1455dcfbc2f242fd9028c23d78beea1841e44f

zuul.d/zuul-legacy-jobs.yaml

@@ -3465,6 +3465,13 @@
       - ^releasenotes/.*$
       - ^test-requirements.txt$
 
+- job:
+    name: legacy-puppet-beaker-rspec-centos-7-infra
+    parent: legacy-puppet-beaker-rspec-infra
+    run: playbooks/legacy/puppet-beaker-rspec-centos-7/run.yaml
+    post-run: playbooks/legacy/puppet-beaker-rspec-centos-7/post.yaml
+    nodeset: legacy-centos-7
+
 - job:
     name: legacy-puppet-beaker-rspec-ubuntu-trusty
     parent: legacy-puppet-openstack-integration

zuul.d/zuul-legacy-project-templates.yaml

@@ -320,6 +320,15 @@
         - legacy-puppet-beaker-rspec-infra:
             voting: false
 
+- project-template:
+    name: puppet-beaker-jobs-centos-7-infra
+    check:
+      jobs:
+        - legacy-puppet-beaker-rspec-centos-7-infra
+    gate:
+      jobs:
+        - legacy-puppet-beaker-rspec-centos-7-infra
+
 - project-template:
     name: puppet-module-unit-jobs
     check: