ENG-7417: make admin client not fail on UpdateDeployment and review comments.
ENG-7417: remove double log
Merge pull request #1905 from VoltDB/ENG-7417

ENG-7417: make admin client not fail on UpdateDeployment and review comm...
Merge remote-tracking branch 'upstream/master'

Conflicts:
	src/frontend/org/voltdb/HTTPClientInterface.java
refactor back HTTPAdminListener to upstream/master