upstream tests: Disable dnsconfig and dnsforwardzone

Due to an issue with IPA in Fedora 36, dnsconfig and dnsforwardzone
plugin tests must be disabled.

See FreeIPA issue: https://pagure.io/freeipa/issue/9158

tests/azure/templates/variables.yaml

@@ -14,5 +14,7 @@
 variables:
   # ipa_enabled_modules: >-
   # ipa_enabled_tests: >-
-  # ipa_disabled_modules: >-
+  ipa_disabled_modules: >-
+    dnsconfig,
+    dnsforwardzone,
   # ipa_disabled_tests: >-