Description:
1. Fixed file paths in Nova, Neutron according to actual Openstack repository.
2. tox.ini: init file to run to tox command
3. run_tests.sh: actual script to run unit tests
4. omni-requirements.txt: Contains Python packages from Nova, Glance, Neutron and Cinder
Usage:
To run unit tests, execute 'tox -epy27' command in Omni project directory.
Change-Id: Ife3a5d4c009198fb46faff7a21525dd739a87e9c
Pratik Shah