Preparing for 2.2.0 release.

Updated version and dependencies in Modulefile.
Updated release notes in README.md.

Change-Id: I7910d6390bd967efbeedf42ddd0e7e60a8f4516a
(cherry picked from commit f52f18446dd9761d0d37d340523bed7c0143c1d7)
Add it_configures rspec helper

Required to ease backport of changes and tests.

Change-Id: Id7bd87207a560fbfbcfb0b22ecb48838db8cac28
Fix package name for nova-spiceproxy on Ubuntu

Package name is nova-spiceproxy, not nova-spicehtml5proxy for Ubuntu.

Change-Id: Ica1e85f723c3deb1ec24134010de6c25c5f05e35
Closes-bug: #1257984
(cherry picked from commit 1134e8a17d827575c1c049d862d79dbbe08b7dbe)
Add nova::patch class to include in other commits requiring patches
Merge branch 'grizzly' of https://github.com/gwdg/puppetlabs-nova into grizzly