CLOUDSTACK-2536: fix the regression introduced by 4c81ea69c4e8326cc81a0e2607f6a6d99645ce5f
change associatesUcsProfileToBlade to async api
Fix an incomplete logging message.
CLOUDSTACK-3491 delete host resulting NPE; Exception caught while handling disconnect: java.lang.NullPointerException

Changes:
- During host deletion, host entry in databse gets removed prior to the disconnect task getting processed.
- This causes the disconnect task to get NPE while trying to do the host state transition
CLOUDSTACK-3821 RegisterTemplate URL validation issue

Changes:
- Added validation for the url path