stories 72005236. Fedora Repository HTTP API Module fails to build without 'clean' due to integration test failure.

Replaced string literal integration test object names with UUID.

https://www.pivotaltracker.com/s/projects/684825/stories/72005236
Story 75454574. Use millisecond precision to generate ETag value.

Use Date.getTime() instead of Date.toString()

https://www.pivotaltracker.com/s/projects/684825/stories/75454574
Merge pull request #417 from umd-lib/httpapi-IT

stories 72005236. Fedora Repository HTTP API Module fails to build witho...
Merge remote-tracking branch 'upstream/master' into master-aic