CFY-1360 remove unused variables
CFY-1360 add initial support for defining script in operation/workflow mapping
CFY-1360 flake8
Merge pull request #26 from cloudify-cosmo/CFY-1311-get-property-recursive-fix

CFY-1311 get property recursive fix
CFY-1360 improve description
Merge pull request #27 from cloudify-cosmo/CFY-1360-script-workflow

Cfy 1360 script workflow
CFY-1311 bug fix
CFY-1363 added nested properties to get_property and get_attribute