CFY-1741 disconnect active connection after worker installer tasks
CFY-1741 code cleanup
Merge pull request #171 from cloudify-cosmo/CFY-1707_use_cloudify_agent_settings_given_as_invocation_input

Cfy 1707 use cloudify agent settings given as invocation input
Merge branch 'master' into CFY-1741-clear-fabric-cache
CFY-1741 add comment
Merge pull request #175 from cloudify-cosmo/CFY-1741-clear-fabric-cache

CFY-1741 disconnect active connection after worker installer tasks
fixing duplication check
Merge branch 'master' into CFY-1707_use_cloudify_agent_settings_given_as_invocation_input
flake8