Workflow creator
Workflow creator

Implemented:
 * Base workflow creator
 * Pig workflow creator

Implements blueprint edp-oozie-workflow-creator

Change-Id: Id621778477047236d174d99ea6d43bee93fbc325

esikachev/sahara-tests,openstack/sahara-scenario,openstack/sahara-scenario,openstack/sahara-tests,openstack/sahara-tests,openstack/sahara-scenario,openstack/sahara-tests,openstack/sahara-tests,esikachev/sahara-tests,esikachev/sahara-tests