acceptance tests for hkl are not good enough

[ambarb]

https://github.com/NSLS-II-CSX/profile_collection/blob/7c54a04af2089654e04cbc12e1b64ce7f735bd4f/acceptance_tests/08-hkl_blueskyplans.py#L83

need to extend to scanning single axis (L) with h and k offset by gamma of 4 (so not equal to 0).