Ignore api.compute.admin.test_networks.NetworksTest.test_list_all_networks

It randomly fails for example [1].
There is a fix pushed to tempest too. [2]

[1] https://gcsweb-ci.apps.ci.l2s4.p1.openshiftapps.com/gcs/origin-ci-test/pr-logs/pull/openstack-k8s-operators_nova-operator/408/pull-ci-openstack-k8s-operators-nova-operator-main-nova-operator-build-deploy-tempest/1671137960516390912/build-log.txt
[2] https://review.opendev.org/c/openstack/tempest/+/883892

Change-Id: Ia0e8cc9e68b9b29afaa7a505cc88314bbb2eefea

openstack-operators/tempest_skip.yml

@@ -101,6 +101,15 @@ known_failures:
     jobs:
       - cinder-operator
   # Nova operator
+  - test: tempest.api.compute.admin.test_networks.NetworksTest.test_list_all_networks
+    deployment:
+      - overcloud
+    releases:
+      - name: master
+        reason: Broken test, see https://review.opendev.org/c/openstack/tempest/+/883892
+        lp: http://no.bug
+    jobs:
+      - nova-operator
   - test: tempest.api.compute.admin.test_hypervisor_negative.HypervisorAdminNegativeUnderV252Test.test_search_hypervisor_with_non_admin_user
     deployment:
       - overcloud