Fix keepalived double restart

Accidental double restart may cause race condition of service not up in
time when listed by second restart call of reset_node_service.

Resolves: OSPCIX-467

Change-Id: I941673a3cbb6c755254029b8c7b9eb4a456c2d48

whitebox_neutron_tempest_plugin/tests/scenario/test_vrrp.py

@@ -103,7 +103,6 @@ class VrrpTest(base.BaseTempestTestCaseAdvanced):
             'echo "{0}" > /tmp/{1};'
             'sudo mv -Z /tmp/{1} /etc/keepalived/'.format(
                 config_text, config_file))
-        ssh_client.exec_command("sudo systemctl restart keepalived")
         # restart and make sure keepalived is active
         self.reset_node_service('keepalived', ssh_client)