Added cli.main unit tests
Added cli.main unit tests

Added more bandit.cli.main unit tests for improved coverage. Also, updated
bandit config file (bandit.yaml) example to be more realistic for testing
purposes.

Change-Id: Ic577cf5569152c0184eeca257cef94cccc98c495

stackforge/bandit,stackforge/bandit,chair6/bandit,pombredanne/bandit,pombredanne/bandit