Remove ambiguity in stubbed methods in spec_helper

- Adjust the stubs in spec/spec_helper.rb to specify the appropriate
  number of expected variables
- Add parenthensis around return values

Change-Id: Id92fbfad0433fcdcbe0ab6909a0b717d614ac62c
Partial-Bug: #1271535
Clean up cookbook for bp/clean-up-attr-for-mq-and-db

This change removes the attributes we'll be moving to openstack-common
and changes reference of those attributes to reflect new (more
consistent) namespace. We also fix a broken test which doesn't properly
converge after changing a node attribute.  Lastly, we handle the rabbit
mq attribute use_ssl.

Change-Id: I12b9c33f89eb35a66bae7420340aff10efd18b1c
Implements: blueprint clean-up-attr-for-mq-and-db
Fix the RBD driver class reference

The reference for the RBD driver class was wrong.  It was fixed in all
places.

blueprint rbd-for-block-storage

Change-Id: Ie91fd2d41b82120673c0b579230228c2f6dc79e3
Merge "Fix the RBD driver class reference"