Move live_migration test hooks under gate/

This patch resolves a TODO in the .zuul.yaml about using common
irrelevant files in our dsvm jobs. To be able to do that we need to move
the test hooks from nova/tests/live_migraton under gate/.

Change-Id: I4e5352fd1a99ff2b4134a734eac6626be772caf1

.zuul.yaml

@@ -128,25 +128,7 @@
       Config drive is forced on all instances.
     run: playbooks/legacy/nova-live-migration/run.yaml
     post-run: playbooks/legacy/nova-live-migration/post.yaml
-    irrelevant-files: &live-migration-irrelevant-files
+    irrelevant-files: *dsvm-irrelevant-files
-      # We define our own irrelevant-files because we need to run
-      # this if there are changes to nova/tests/live_migration/.
-      # TODO(mriedem): Move the nova/tests/live_migration/ scripts to gate/
-      # so this job can use the standard dsvm-irrelevant-files.
-      - ^api-.*$
-      - ^(test-|)requirements.txt$
-      - ^.*\.rst$
-      - ^.git.*$
-      - ^doc/.*$
-      - ^nova/hacking/.*$
-      - ^nova/locale/.*$
-      - ^nova/tests/(?!live_migration/).*$
-      - ^nova/test.py$
-      - ^releasenotes/.*$
-      - ^setup.cfg$
-      - ^tests-py3.txt$
-      - ^tools/.*$
-      - ^tox.ini$
 
 - job:
     name: nova-lvm
@@ -268,7 +250,7 @@
     name: nova-grenade-live-migration
     parent: nova-dsvm-multinode-base
     description: |
-      Multi-node grenade job which runs nova/tests/live_migration/hooks tests.
+      Multi-node grenade job which runs gate/live_migration/hooks tests.
       In other words, this tests live migration with mixed-version compute
       services which is important for things like rolling upgrade support.
       The former name for this job was
@@ -279,7 +261,7 @@
       - openstack/grenade
       - openstack/devstack-gate
       - openstack/nova
-    irrelevant-files: *live-migration-irrelevant-files
+    irrelevant-files: *dsvm-irrelevant-files
 
 - job:
     name: nova-multi-cell

gate/live_migration/hooks/run_tests.sh

@@ -16,9 +16,9 @@ source $BASE/new/devstack/functions
 source $BASE/new/devstack/functions-common
 source $BASE/new/devstack/lib/nova
 source $WORKSPACE/devstack-gate/functions.sh
-source $BASE/new/nova/nova/tests/live_migration/hooks/utils.sh
+source $BASE/new/nova/gate/live_migration/hooks/utils.sh
-source $BASE/new/nova/nova/tests/live_migration/hooks/nfs.sh
+source $BASE/new/nova/gate/live_migration/hooks/nfs.sh
-source $BASE/new/nova/nova/tests/live_migration/hooks/ceph.sh
+source $BASE/new/nova/gate/live_migration/hooks/ceph.sh
 primary_node=$(cat /etc/nodepool/primary_node_private)
 SUBNODES=$(cat /etc/nodepool/sub_nodes_private)
 SERVICE_HOST=$primary_node

playbooks/legacy/nova-grenade-live-migration/run.yaml

@@ -48,7 +48,7 @@
               export OVERRIDE_ZUUL_BRANCH=$BRANCH_OVERRIDE
           fi
           function post_test_hook {
-              /opt/stack/new/nova/nova/tests/live_migration/hooks/run_tests.sh
+              /opt/stack/new/nova/gate/live_migration/hooks/run_tests.sh
           }
           export -f post_test_hook
           cp devstack-gate/devstack-vm-gate-wrap.sh ./safe-devstack-vm-gate-wrap.sh

playbooks/legacy/nova-live-migration/run.yaml

@@ -48,7 +48,7 @@
           export DEVSTACK_GATE_TEMPEST_NOTESTS=1
           export DEVSTACK_GATE_TOPOLOGY="multinode"
           function post_test_hook {
-              /opt/stack/new/nova/nova/tests/live_migration/hooks/run_tests.sh
+              /opt/stack/new/nova/gate/live_migration/hooks/run_tests.sh
               $BASE/new/nova/gate/test_evacuate.sh
           }
           export -f post_test_hook