Setting up repo for master Juno Branch

* Update metadata version
* Adding Gemfile.lock to .gitignore
* Updating Gems
  * chef (11.12.0)
  * chefspec (4.0.0)
  * rspec (3.0.0)

Change-Id: I6f0ee13f6eb2562e199e755975997df3574b5515
Partial-Bug: 1349865