Revert "Mark tempest-multinode-full-py3 as n-v"

This reverts commit 517563fde84fa84199f13fb984945b897bf50bee.

Reason for revert: we did few improvement in job/tests run, let's see if timeout is solved or less frequent.

Change-Id: Ib29fb6d817b801e1472fc22fe761a2309f473dc0
diff --git a/zuul.d/project.yaml b/zuul.d/project.yaml
index 4281d6b..7f6e186 100644
--- a/zuul.d/project.yaml
+++ b/zuul.d/project.yaml
@@ -37,11 +37,7 @@
             irrelevant-files: *tempest-irrelevant-files
         - tempest-full-xena:
             irrelevant-files: *tempest-irrelevant-files
-        # Temporarily marked as n-v due to the below bug which blocks
-        # the CI and complicates merging of patches.
-        # https://bugs.launchpad.net/tempest/+bug/1998916
         - tempest-multinode-full-py3:
-            voting: false
             irrelevant-files: *tempest-irrelevant-files
         - tempest-tox-plugin-sanity-check:
             irrelevant-files: &tempest-irrelevant-files-2
@@ -141,9 +137,8 @@
             irrelevant-files: *tempest-irrelevant-files
         - tempest-ipv6-only:
             irrelevant-files: *tempest-irrelevant-files-3
-        # https://bugs.launchpad.net/tempest/+bug/1998916
-        #- tempest-multinode-full-py3:
-        #    irrelevant-files: *tempest-irrelevant-files
+        - tempest-multinode-full-py3:
+            irrelevant-files: *tempest-irrelevant-files
         - tempest-full-enforce-scope-new-defaults:
             irrelevant-files: *tempest-irrelevant-files
         #- devstack-plugin-ceph-tempest-py3: