Stop using intersphinx

Remove intersphinx from the docs build as it triggers network calls that
occasionally fail, and we don't really use intersphinx (links other
sphinx documents out on the internet)

This also removes the requirement for internet access during docs build.

This can cause docs jobs to fail if the project errors out on
warnings.

Change-Id: I71e941e2a639641a662a163c682eb86d51de42fb
Related-Bug: #1368910
Fix AuthPlugin authentification

AuthPlugin wrongly assumed that self.opts['token'] is always a function.

Change-Id: I968c62aec0d16d736693e403d03a495baf8ea15a
Closes-Bug: #1369461
Merge "Fix AuthPlugin authentification"