gllssi2isis Original Label Fix (#3226)

* Allowed writting of residuals when value is zero to controlnet pvl

* Updated ControlNetVersioner unit test

* Fixed pvl labels original pvl labels not being written to the resulting cube.

* Updated docstrings and history for updated methods

* Removed the need to set the output cube pixel type

* Reverted proceeimport changes

* Set the dimensions in the process before processing

* Added missing 1 in a history record

* Reverted and applied a more appropriate fix

* Used outfile obtained at the beginning of the program

* Added history comment to app xml