Revert "[Train] skip FloatingIpTestCasesAdmin.test_two_vms_fips"

This reverts commit cd63ed0aef.

Reason for revert: The issue is resolved now.

Change-Id: I5f29327272893e5788a02e2640fbf23639cc933f
Closes-Bug: #1921087

roles/validate-tempest/vars/tempest_skip.yml

@@ -1828,12 +1828,3 @@ known_failures:
         lp: https://bugs.launchpad.net/tripleo/+bug/1919111
     jobs:
       - periodic-tripleo-ci-centos-8-ovb-1ctlr_2comp-featureset020-master
-  - test: neutron_tempest_plugin.scenario.admin.test_floatingip.FloatingIpTestCasesAdmin.test_two_vms_fips
-    deployment:
-      - overcloud
-    releases:
-      - name: train
-        reason: No valid host was found on overcloud-novacompute-1.novalocal node
-        lp: https://bugs.launchpad.net/tripleo/+bug/1921087
-    jobs:
-      - periodic-tripleo-ci-centos-8-ovb-1ctlr_2comp-featureset020-train