Add log info where tempest is going to be running

Change-Id: Iaf1f0077f7167d9c1280b8d29b67d23b39fad206
diff --git a/tcp_tests/managers/openstack_manager.py b/tcp_tests/managers/openstack_manager.py
index c09ca70..bd3e889 100644
--- a/tcp_tests/managers/openstack_manager.py
+++ b/tcp_tests/managers/openstack_manager.py
@@ -73,6 +73,8 @@
                                   "service.restart keepalived")
         self.__underlay.check_call(cmd=restart_keepalived_cmd,
                                    host=self.__config.salt.salt_master_host)
+        LOG.info("Running tempest testing on node {0} using the following "
+                 "command:\n{1}".format(target_name[0], cmd))
 
         with self.__underlay.remote(node_name=target_name[0]) as node_remote:
             result = node_remote.execute(cmd, verbose=True)