Revert "Reuse maestro::repository::username and password values"

This reverts commit b0a15d875a60f99f8a35a37072a99ace77e7fe5c.
Merge branch 'development'
Merge branch 'development'
Merge branch 'development'
Merge branch 'development'
update archive plugin
Move default nodes to a new folder so newly defined nodes take precedence

Add master_base missing node
Don't overwrite node if it already exists
Add example node
Update agent to 2.0.5
Explicitly set rvm version to 1.23.1
Merge branch 'development'

Conflicts:
	README.md
	get-maestro.sh
	hieradata/default.yaml
	spec/support/shared_context.rb
[maven-release-plugin] prepare release maestro-4.18.0
[maven-release-plugin] prepare for next development iteration
[maven-release-plugin] prepare release maestro-4.18.0
[maven-release-plugin] prepare for next development iteration
Merge branch 'development'