test plan:
- use the bin/contracts-publish-api file to publish
a pact file to the pact broker
- verify the SHA on the broker matches the HEAD SHA on your
current branch using `git log`
Change-Id: I69a08a2e4fb735d1f211fb29d860f829c75113fd
Reviewed-on: https://gerrit.instructure.com/156448
Tested-by: Jenkins
Reviewed-by: Deepeeca Soundarrajan <dsoundarrajan@instructure.com>
Reviewed-by: Anju Reddy <areddy@instructure.com>
Product-Review: Anju Reddy <areddy@instructure.com>
QA-Review: Anju Reddy <areddy@instructure.com>
Robert Lamb