UI: Domain CRUD along with few tests
Merge branch 'master' into domain
Added the CRUD and basic tests for envs
Support for Hammer CLI fact command.

* The command hammer fact only exposes the 'list' subcommand;
* Added 9 data-driven tests for hammer list command;
Merge pull request #139 from omaciel/hammer-fact

Support for Hammer CLI fact command.
CLI class instantiation doesn't require self.conn anymore.
Merge branch 'master' into domain
Merge branch 'domain' of github.com:sghai/robottelo into domain
Merge pull request #136 from sghai/domain

Domain tests and functions
added assertion but commented due to issue 3826
Merge pull request #140 from kbidarkar/crud-env

Added the CRUD and basic tests for envs
Moved manifests module to lib.common
Merge pull request #141 from kbidarkar/fix-manifest-pkg

Moved manifests module to lib.common
Some PEP8 fixes and absolute import fixes
Merge pull request #143 from kbidarkar/fix-issues-PEP8

Some PEP8 fixes and absolute import fixes