cluster: dearmor Googles GPG key
Google recently changed their GPG key to require dearmoring. So, handle their GPG key the same way Docker's GPG key is handled.
See [1, 2] for more details.
Signed-off-by: Nathan Brown nathan.brown@arm.com Reviewed-by: Trevor Tao trevor.tao@arm.com Reviewed-by: Tianyu Li tianyu.li@arm.com
Change-Id: I748b4105dca57cd9a4e7c8e3e3db0336fc8b30f6