Force assemble_fibermap for nights before or during 20200310

[akremin]

" --force" is an optional keyword to assemble_fibermap meant to be run if the code fails because of a missing coordinates file. We want the code to fail by default to indicate that ICS didn't provide coordinate information. However, early commissioning data sometimes didn't include this and for reprocessing of minisv2 and sv0 it is a known issue we would like to look past.

For future data we still want to know when coord* files aren't supplied, so the code still fails by default in those instances.

[akremin]

Tested with:
desi_proc --batch -n 20200219 -e 51059
(where there is no coordinates file)

and:
desi_proc --batch -n 20200219 -e 51060
(where this is a coordinates file).

Works in both instances