Pipeline Object FileList Fix (#4372)

* Update SetInputListFile to use the FileList object rather than the TextFile object.
Also updated SetInputListFile isisparameter function to chain into the 
SetInputListFile FileName function.

* Modified filelist to handle list files with no trailing new line character

* Added a test to check that filelist retains expected new functionality

* Fixed issues with pipeline and hardcoded values in hijitter

* Removed specific mention of trailing new line necessity in cubeit.xml

* Updated changelog

Co-authored-by: Jesse Mapel <jmapel@usgs.gov>