CFY-494 add ilya plugin code
CFY-494 update gitignore
CFY-494 refactoring
CFY-494 expose properties in chef attributes
CFY-494 add deployment id and blueprint id to chef attributes
CFY-494 fix bug with related node
CFY-494 added license headers, fixed setup.py
CFY-494 flake8 + tests
Merge pull request #1 from cloudify-cosmo/feature/CFY-494-integrate-chef-plugin

Feature/cfy 494 integrate chef plugin
CFY-415 use explicit runtime_properties
CFY-415 update gitignore
Merge pull request #2 from cloudify-cosmo/feature/CFY-415-runtime-properties-changes

Use explicit runtime_properties
CFY-637 update version and branches