Add tripleo-ci-centos-9-standalone-build job

Create a c9 parallel to c8 build job, which doesn't use provider.
Change-Id: I9786b54afcdf8bd082880bd00a43dc852a7d9f48

zuul.d/standalone-jobs.yaml

@@ -83,7 +83,7 @@
     parent: tripleo-ci-centos-8-standalone
     vars:
       build_container_images: true
-    files:
+    files: &sa_build_files
       - config/release/tripleo-ci/.*
       - roles/standalone/.*
       - roles/build-containers/.*
@@ -92,6 +92,13 @@
       - roles/container-update/.*
       - roles/extras-common/.*
 
+- job:
+    name: tripleo-ci-centos-9-standalone-build
+    parent: tripleo-ci-centos-9-standalone
+    vars:
+      build_container_images: true
+    files: *sa_build_files
+
 - project-template:
     name: tripleo-standalone-scenarios-pipeline
     check: