Treats OS-KSADM:password as password in v2 APIs

The OS-KSADM Extension documentation uses OS-KSADM:password
instead of password in some of its examples.  This makes
those examples work.

Change-Id: Ibdfab0b9f085548a86eb391e7dc3b279dfc7b420
Fixes-Bug: #1226466
Adds decorator to deprecate functions and methods

This will be use to implement bp deprecate-v2-api.

Change-Id: I361ac1c472f6eb9b865a2190fee7d33f5022b24a
Merge "Treats OS-KSADM:password as password in v2 APIs"
Merge "Adds decorator to deprecate functions and methods"