Merge "Sysconfig define a whitelist of permitted backup transports" into nyc-dev
am: 11d9586117

* commit '11d9586117e983e36b2467bcb436200268cd0933':
  Sysconfig define a whitelist of permitted backup transports

Change-Id: I5987e96ea1d2668037a7f924ad3ee6b5fa96bda8