Merge "Remove centos-7-standalone-upgrade" into stable/train

zuul.d/layout.yaml

@@ -80,8 +80,6 @@
             files:
               - ^container-images/.*$
               - tripleo_common/image/kolla_builder.py
-        - tripleo-ci-centos-7-standalone-upgrade:
-            dependencies: *deps_unit_lint
         - tripleo-ci-centos-8-scenario001-standalone:
             vars: *sa_consumer_vars
             dependencies: *deps_cprovider