The developer docs should tell developers to use keystoneauth1
sessions rather than keystoneclient sessions or passing
arguments to the Client constructors. keystoneclient sessions and
constructing Clients using non-sessions is deprecated.
Change-Id: Ica19b8d6fb2f5d1a9d0d22d4fe08abb266fd6a86
Include some client documentation for how to work with a Session object.
This is generally high level with this expectation that a developer
could take the concepts found here and determine more from the module
documentation.
Change-Id: I5e44c1029ce160cb2798cfb8a535aa9f3311799a