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: I7c894dd6dc494dc5c02ba9e9676b53b0acc281d4