Fix cinder Debian install procedure

This patch adds links to the "Respond to the prompts for" steps,
and removes the manual edition of cinder.conf for the
keystone_authtoken (as this is handled by Debconf).

Change-Id: Ia0db1dfd4ccd47845333acbc6000330c83c985fb
Backport: icehouse
Add oslo.db link to the documentation

oslo.db has been graduated from oslo-incubator, so we should add
required link to the oslo developers documentation.

blueprint oslo-db-lib

Change-Id: Ib9d1b13d8d303a737d3aec8cefb0a11b2513dd58
Remove typo - duplicate 'you'

Change-Id: Iaa90a7229776d4dd6abced99a83d4d500c267b46
Closes-Bug: #1330206
Merge "Fix cinder Debian install procedure"
Merge "Add oslo.db link to the documentation"