CLOUDIFY-2433 added delete blueprint api
Merge branch 'develop' into feature/CLOUDIFY-2433-Add-delete-blueprint-api
CFY-149 improved elasticsearch queries for blueprint's deployments and deployment's executions; changed error code for existing dependencies from 404 to 400; Added tests for blueprint deletion
CFY-149 flake8 fix
Merge branch 'develop' into feature/CLOUDIFY-2433-Add-delete-blueprint-api
CFY-149 refactored a test on manager_rest tests
CFY-149 flake8 fix
Merge pull request #188 from CloudifySource/feature/CLOUDIFY-2433-Add-delete-blueprint-api

Feature/cloudify 2433 add delete blueprint api