set workflow tests to work with the new cosmo manager rest client
fixed uninstall application tests
Merge pull request #112 from CloudifySource/feature/making-use-of-the-manager-rest-client-for-workflow-tests

set workflow tests to work with the new new cosmo manager rest client
CLOUDIFY-2303

Modify uninstall workflow to make sure we call uninstall in reverse relationship order
Merge branch 'develop' into feature/CLOUDIFY-2303-uninstall-phase2
CLOUDIFY-2316

Workflow service python client, throw python exception with the full json response from the service if an error occurred.
manager rest will include this json as part of the error it throws
CLOUDIFY-2303

Fix uninstall workflow errors
Change logging in install workflow to display node id and not entire node element.