CI Gating: Disable fedora-ci.koji-build.tier0.functional

Disable fedora-ci.koji-build.tier0.functional because of
https://gitlab.com/testing-farm/general/-/issues/37

With this update, fedora-ci.koji-build.tier0.functional will
still be executed, but it's test result will not be taken into
account for gating purposes.

Once the aforementioned CI Infrastructure issue is resolved,
we can roll this update back.

gating.yaml

@@ -1,4 +1,5 @@
 # recipients: glibc-bugzilla
+# yamllint disable rule:line-length
 --- !Policy
 product_versions:
   - fedora-*
@@ -7,7 +8,7 @@ decision_contexts:
   - bodhi_update_push_stable_critpath
 subject_type: koji_build
 rules:
-  - !PassingTestCaseRule {test_case_name: fedora-ci.koji-build.tier0.functional}
+  # - !PassingTestCaseRule {test_case_name: fedora-ci.koji-build.tier0.functional}
   - !PassingTestCaseRule {test_case_name: baseos-qe.koji-build.scratch-build.validation}
 --- !Policy
 product_versions: