Update GDASApp to cycle in g-w

[RussTreadon-NOAA]

As documented in g-w issue #1067, updates need to be made to modulefiles/GDAS/$machine.lua and the spack-stack installation to include modules and variable definitions found in g-w modulefiles/module_base.$machine.lua. Absent these updates GDASApp jobs fail when run in g-w with unbound variable errors.

This issue is opened to document GDASApp module updates. Updates to the spack-stack installation will necessitate the opening of issue(s) in spack-stack.

While updating modulefiles in order to cycle GDASApp within g-w, realize that changes in addition to modulefiles are necessary. These changes will also be tracked in this issue.

[RussTreadon-NOAA]

Changes pertaining to this issue will be committed to GDASApp branch feature/updates_for_gw. This branch originated from develop at 0332c17.

[RussTreadon-NOAA]

Note: The GDASApp changes committed to feature/updates_for_gw require the use of g-w branch feature/updates_for_GDASApp. . See g-w issue #1067 for details.

[RussTreadon-NOAA]

Close this issue with merger of PR #162 into develop.