get_starcheck_catalog doesn't work for 17210

For obsid 17210, there's a zero length NPNT cmd state at the very end that really belongs to the commanding of the next obsid but is simultaneous to the MP_OBSID command.
The cmd_state identified ends up putting 17210 in the wrong schedule in the lookups.

This line:

mica/mica/starcheck/starcheck.py

Line 171 in acf101e

"where obsid = %d and pcad_mode = 'NPNT'"

would probably be improved by setting a minimum duration on the NPNT cmd_state.

Closed by #98