Azure CI: Re-enable dnszone tests with forwarder ports

As the latest versions of FreeIPA contain fixes to set the port on
DNS forwarders, this patch re-enables the upstream tests.

tests/azure/templates/variables_fedora-latest.yaml

@@ -15,9 +15,8 @@
 # one item is needed in the set.
 ---
 variables:
+  empty: true
   # ipa_enabled_modules: >-
   # ipa_enabled_tests: >-
-  ipa_disabled_modules: >-
-    dnsforwardzone,
-  ipa_disabled_tests: >-
-    test_dnsconfig_forwarders_ports
+  # ipa_disabled_modules: >-
+  # ipa_disabled_tests: >-

tests/azure/templates/variables_fedora-rawhide.yaml

@@ -17,7 +17,5 @@ variables:
   empty: true
   # ipa_enabled_modules: >-
   # ipa_enabled_tests: >-
-  ipa_disabled_modules: >-
-    dnsforwardzone,
-  ipa_disabled_tests: >-
-    test_dnsconfig_forwarders_ports
+  # ipa_disabled_modules: >-
+  # ipa_disabled_tests: >-