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 volume name support of unmanage and replication commands

Volume not found error occurs when running these commands via cinderclient
with volume name as an argument.
unmanage, replication-promote, replication-reenable

However in their help text, it is described that Name and ID are supported.
Therefore, this patch fixes volume name support to their argument.

Closes-bug: #1374211
Change-Id: I8b90523d8e79a65eb27ff4e99820e8cb3feb3120
Merge "Stop using intersphinx"
Merge "Fix volume name support of unmanage and replication commands"