make xunit reports to be collected. Commenting processes property
nose groups added.
Few pylint fixes
lib/common/helpers.py
adding doc
no TODOs
pep E128
adding executable header too
unused constant + header
using --search in list command. thanks @omaciel
refactoring cli tests
Added locators for HOST CRUD
All Base CLI methods now return the same object.

Out of all existing Base CLI methods, ```info``` and ```list``` were
the only ones that did not return a python dictionary containing
stdout, stderr and retcode. I have updated them so that they now
return the proper object. The ```existing``` is the sole exception to
the rule.

While refactoring some of the tests that were affected by the changes
above, I had to explicitly skip a test from test_fact as it requires
some more work to setup the system for Facts.
done with: #162 Waiting for another PR to become in place for making environment.update return code possible to assert.
__ret -> result
don't send --output csv for the calls not expecting csv output.
_ret => result
Add nose to requirements
Some minor delimiter work for MAC addrs
Added the needed locators for config_templates