Add Agent Elastic IP for GCP windows 1709 integration test
Add Agent Elastic IP for GCP windows 1709 integration test

[#157010537](https://www.pivotaltracker.com/story/show/157010537)

Signed-off-by: Zander Mackie <320db42c0fea4ffbf0ae28d5036748df300aa745@pivotal.io>

gu-bin/bosh-agent,mattcui/bosh-agent,mattcui/bosh-agent,mattcui/bosh-agent,cloudfoundry/bosh-agent,cloudfoundry/bosh-agent,gu-bin/bosh-agent,gu-bin/bosh-agent