Update the Tempest plugin to point towards the new plugin

The Trove service has split it's tests for Tempest in a seperate
repo so this patch updates it.

This patch also fixes the lint issue to use the systemd module
reload feature instead of a command.

Closes-Bug: #1747608
Co-Authored-By: Major Hayden <major@mhtx.net>
Depends-On: I5f1ecb71c6125c29d6487bef6c2be215c1b561c1
Change-Id: I26d384a5c9aadade94052cc859f9405335635ed4

tasks/trove_init_systemd.yml

@@ -51,7 +51,8 @@
   register: systemd_init
 
 - name: Reload the systemd daemon
-  command: "systemctl daemon-reload"
+  systemd:
+    daemon_reload: true
   when: systemd_init | changed
   notify:
     - Restart trove API services

tests/os_trove-overrides.yml

@@ -51,8 +51,8 @@ tempest_run: yes
 
 tempest_plugins:
   - name: trove
-    repo: https://git.openstack.org/openstack/trove
+    repo: https://git.openstack.org/openstack/trove-tempest-plugin
     branch: master
 
 tempest_test_whitelist:
-  - trove.tests.tempest.tests.api.database.versions.*
+  - trove_tempest_plugin.tests.api.database.versions.*