provisioner generated fields moved out of node properties and into
its own section. As a result, the user and password shown in the
ui for the rackspace provider needs to change.
Merge remote-tracking branch 'origin/develop' into feature/username-password-in-ui

Conflicts:
	integration-testing/src/test/java/com/continuuity/test/pagetest/ClustersInstanceTest.java
	ui/client/templates/user/clusters/describecluster.html
	ui/test/clusters/clusterdefinitions.json
Merge pull request #358 from continuuity/feature/username-password-in-ui

provisioner generated fields moved out of node properties and into