CPI pipeline secret changes for integration tests
CPI pipeline secret changes for integration tests

[#155297298](https://www.pivotaltracker.com/story/show/155297298)

Signed-off-by: Saman Alvi <a99666c385ff8d52f85bf6d52848ed17df23a2c5@pivotal.io>

cloudfoundry-incubator/bosh-aws-cpi-release,cloudfoundry-incubator/bosh-aws-cpi-release,cloudfoundry-incubator/bosh-aws-cpi-release