Take in integration-tests-parallel-runtime as input to integrations
Take in integration-tests-parallel-runtime as input to integrations

[#156865602](https://www.pivotaltracker.com/story/show/156865602)

Co-authored-by: Michael Xu <9a9f0f9e4cafa7274ac4427113dff9772742c003@pivotal.io>

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