ignore code coverage outputs
ignore code coverage outputs

Added code coverage outputs genereated by
coverage.py to .gitignore .  To generate code
coverage report, run this command:

  coverage run tests/runtests.py

To produce HTML coverage repot (`htmlcov/index.html`):

  coverage html --omit=tests/*

To produce Cobertura compliant XML for Jenkins:

  coverage xml --omit=tests/*

saltstack/salt,saltstack/salt,saltstack/salt,saltstack/salt,saltstack/salt