check vm's ip address before going to bootstrap in cluster heal service
set vc query related logs to INFO level

when the loglevel is set to DEBUG in serengeti/log4j.properties, the log file is full
of org.apache.http.xxx logs coming from vc queries. Set its level to INFO to avoid log
explosion
separate node data verify step from nodeUpdateData step

as exception in a spring batch step will rollback all transcations inside it
Merge branch 'master' of github.com:vmware-serengeti/serengeti-ws

Conflicts:
	server/cluster-mgmt/src/main/java/com/vmware/bdd/utils/JobUtils.java