Update rspec-puppet to remove our fork and remove transitive puppet modules
Bump maestro to 4.11.0 and agent to 1.6.0
Set the correct branch, default to master and use current commit with Vagrant
Update maestro and maestro_nodes modules

Add examples to override repositories and plugin versions
Bump maestro to 4.11.0. Fix spec
Update maestro to 4.11.0 and 1.6.0 agent. Merge branch 'development'

Conflicts:
	Puppetfile
	Puppetfile.lock