(maint) Update pinned Beaker version to 2.22
(maint) Update pinned Beaker version to 2.22

This commit updates the pinned Beaker version to
2.22 to support changes to the puppet-agent
package name and PE repo structure for Mac OS X.

johnduarte/hiera,MikaelSmith/hiera,johnduarte/hiera,MikaelSmith/hiera,johnduarte/hiera,MikaelSmith/hiera