XD-1506 Adding admin-ui to YARN zip packaging
Fix footer content on the UI

- Update license to read "Code licensed under Apache Open Source"
Fixed AbstractSingleNodeStreamDeploymentIntegrationTests

flipped if/else while merging
XD-1482 initial support for deployment manifest

Currently supports two manifest keys:
  1. module.[modulename].count
  2. module.[modulename].target.group
addressed review comments
added javadoc to loadStream()
using target SpEL expression for container matching