OOZIE-1469 loadState() and/or verifyPrecondition() are blank in some commands (virag)

git-svn-id: https://svn.apache.org/repos/asf/oozie/branches/branch-4.0@1507517 13f79535-47bb-0310-9956-ffa450edef68
OOZIE-1470 BundleStatusUpdateXCommand should get lock for bundle job (virag)

git-svn-id: https://svn.apache.org/repos/asf/oozie/branches/branch-4.0@1507518 13f79535-47bb-0310-9956-ffa450edef68