We have random credentials now.

Change-Id: I114f61c1a8ae484b1442224a0d78e623df8e2642
Show the current cloud in the shell prompt.

Folk get confused by switching between clouds... this may help.

Change-Id: Ibae308497609eea9095f6e63fef13cccaba56cda
Merge "We have random credentials now."
Merge "Show the current cloud in the shell prompt."