Move what looks like a unit test to the unit test module.
remove empty ReportStateScriptTests
Document the ChangeStateOptions test case
Document the ReportStateOptions test case
Document flocker_volume_options
Say a little more about the generation and content of the volume.json file.
wording
Document StandardVolumeOptions test case
Test for exit code directly
Consistent order of assert arguments
Use interface argument name
Documenation for make_volume_options_tests