Initial commit

Import gerrit cookbook
Break IBM stuff out into other template
Change to apache2.0 license
Update README.md
Merge branch 'github'

Bring in updates from github branch for commentlink support

Conflicts:
	attributes/default.rb
	templates/default/gerrit/gerrit.config.erb
Add commentlink support to gerrit.config.ibm.erb

Pull in the commentlink changes to the internal template