CFY-661 added list nodes api
CFY-661 added list nodes api
CFY-661 added node instances list
CFY-661 fixed swagger return types
CFY-661 fixed tests
CFY-661 fixed tests and flake8
CFY-661 fixed unit tests
CFY-661 fixed unit tests
Merge pull request #42 from cloudify-cosmo/feature/CFY-661-get-node

CFY-661 added list nodes api