CFY-972 modified 'blueprint' to 'node_instances'; blueprint no longer has a name; nodes is now a dict instead of a list
CFY-972 flake8 fixes
CFY-972 modified types', relationships' and workflow parameters' schema
CFY-972 flake8 fixes
CFY-972 flake8 fixes
Merge pull request #12 from cloudify-cosmo/CFY-972-DSL-alignment-with-tosca

Cfy 972 dsl alignment with tosca