Merge pull request #1 from anodelman/hunner

Persist hosts throughout tests
(QE-243) beaker needs an easy way to get modules onto the SUTs

- support the rspec-system style:
    puppet_module_install(:source => proj_root, :module_name =>
    'haproxy')
Merge pull request #2 from anodelman/easy-module-install

(QE-243) beaker needs an easy way to get modules onto the SUTs
clearer naming for env var that controls provisioning

- use RSPEC_NO_PROVISION if you want to reuse nodes