* Consumers of this client should not depend on being able to import
any module other than glanceclient and glanceclient
* The only attributs of the glanceclient module are Client
and __version__
* The attributes of the glanceclient.exc modules have yet to be
locked down
* glanceclient.common.exceptions was replaced with a placeholder
module until consumers of it are updated
Change-Id: Iea9648cd06906d65764987c1f2ee5a88ebeee748
53acf1a0ca