Adding environment vairable UNSUPPORTED_BATS which can be used to optionally ignore bats with specific rspec tags.
Adding environment vairable UNSUPPORTED_BATS which can be used to optionally ignore bats with specific rspec tags.

[#115789913](https://www.pivotaltracker.com/story/show/115789913)

barthy1/bosh,barthy1/bosh,barthy1/bosh,barthy1/bosh