TST: Fix DrizzlePac align_multiple_visits

[pllim]

Currently, CI is failing because align_multiple_visits notebook uses glob to provide inputs for TweakReg. Unfortunately, glob order can be arbitrary and not well suited for the purpose of running it in a CI. The solution is to provide a deterministic list of input files via .lis file.

Related issues: #77, #78

[pllim]

You would also need to un-exclude the notebook so CI would pick it up again. I excluded it in 18ba024 .

[pllim]

align_mosaic might have the same problem, as it failed in an unrelated PR in #88.

https://spacetelescope.github.io/notebooks/notebooks/DrizzlePac/align_mosaics/align_mosaics.html

[catherine-martlin]

See #89 for the fix - currently WIP but hopefully this test will solve the issue we were running into.