add paver test for bok-choy default command.
Use new bok_choy file paths in paver examples.
Merge pull request #5242 from edx/benp/testing-doc

Use new bok_choy file paths in paver examples.
Set paver command tests to run as part of unit test lib suites.
Merge pull request #5118 from edx/benp/paver-tests

Add tests for paver bok_choy commands
TNL-172: Change type of a previously posted post.