prepare for 2.2.0 release
prepare for 2.2.0 release

I think someone already tried to deploy 2.2.0. The Changelog was already
prepared and the metadata.json version is bumped. however there isn't a
suitable tag or forge release which I want to fix here.

voxpupuli/puppet-confluence,puppet-community/puppet-confluence,voxpupuli/puppet-confluence,puppet-community/puppet-confluence,mkarpiarz/puppet-confluence,joshbeard/puppet-confluence,mkarpiarz/puppet-confluence,mkarpiarz/puppet-confluence,voxpupuli/puppet-confluence,puppet-community/puppet-confluence,joshbeard/puppet-confluence,joshbeard/puppet-confluence