Add default auth api version inherited by other cookbooks and add the
common auth uri transform logic.

- Set default auth api version for other cookbooks, which can be
  inherited and overrided by other cookbooks.

- Move the auth uri transform logic from other cookbooks to this
  openstack-common libraries.

- When auth version is v3.0, the auth uri after transformed should be
suffixed with v3.

Change-Id: I36f831e706f4538c77353849146ebd84c1ca8f14
Imlements: blueprint move-keystone-authtoken-move-auth-uri-logic
Merge "Add default auth api version inherited by other cookbooks and add the common auth uri transform logic."