Properly initialise query_resource_mgr_ in RuntimeState

Change-Id: I9f1b3d606007e7fd64cb44b31401de608e2db84b
Reviewed-on: http://gerrit.ent.cloudera.com:8080/1835
Reviewed-by: Nong Li <nong@cloudera.com>
Reviewed-by: Matthew Jacobs <mj@cloudera.com>
Tested-by: jenkins
(cherry picked from commit 7fbe268078c93ac5675832c9fd7127e5a5104dda)
Reviewed-on: http://gerrit.ent.cloudera.com:8080/1929
Reviewed-by: Henry Robinson <henry@cloudera.com>