CI: disable tests on RHEL 8.5

Main image types aren't get supported for RHEL 8.5
Installer test needs more adjustments so disabling for now to keep CI
from blocking other work.

.gitlab-ci.yml

@@ -107,7 +107,8 @@ Base:
           - aws/centos-stream-8-aarch64
       - RUNNER:
           - aws/rhel-8.4-x86_64
-          - aws/rhel-8.5-x86_64
+          # main image types not yet supported in 8.5
+          # - aws/rhel-8.5-x86_64
           # see COMPOSER-918
           # - aws/rhel-8.4-aarch64
         INTERNAL_NETWORK: ["true"]
@@ -225,19 +226,19 @@ API:
         INTERNAL_NETWORK: ["true"]
         DISTRO_CODE: ["rhel_90"]
 
-Installer:
-  stage: test
-  extends: .terraform
-  rules:
-    - if: '$CI_PIPELINE_SOURCE != "schedule"'
-    - if: '$CI_PIPELINE_SOURCE == "schedule" && $RUNNER =~ /[\S]+rhel-[8-9]\.[\S]+/'
-  script:
-    - schutzbot/deploy.sh
-    - /usr/libexec/tests/osbuild-composer/installers.sh
-  parallel:
-    matrix:
-      - RUNNER:
-          - openstack/rhel-8.5-x86_64
+# Installer:
+#   stage: test
+#   extends: .terraform
+#   rules:
+#     - if: '$CI_PIPELINE_SOURCE != "schedule"'
+#     - if: '$CI_PIPELINE_SOURCE == "schedule" && $RUNNER =~ /[\S]+rhel-[8-9]\.[\S]+/'
+#   script:
+#     - schutzbot/deploy.sh
+#     - /usr/libexec/tests/osbuild-composer/installers.sh
+#   parallel:
+#     matrix:
+#       - RUNNER:
+#           - openstack/rhel-8.5-x86_64
 
 finish:
   stage: finish