CLOUDIFY-2370 added management_plugins_to_install property to parsed dsl node + tests
CLOUDIFY-2475 introduce new plugin type and inject management_plugins_to_install prop in plan
Merge branch 'develop' into feature/CLOUDIFY-2475-dynamic-management-plugins-and-worker-per-deployment

Conflicts:
	dsl_parser/parser.py
CLOUDIFY-2475 fix tests and flake
CLOUDIFY-2475 added a flag to plan specifiying if there are any management plugins to be installed
CLOUDIFY-2475 fix node management plugins parsing logic
CLOUDIFY-2475 remove riemann plugin reference
CLOUDIFY-2475 remove un necessary test
Merge pull request #26 from CloudifySource/feature/CLOUDIFY-2475-dynamic-management-plugins-and-worker-per-deployment

Feature/cloudify 2475 dynamic management plugins and worker per deployment