fre make run-fremake test

[singhd789]

Is your feature request related to a problem? Please describe.
fre make run-fremake needs an associated test.

Describe the solution you'd like
Tests could include

• existence of model yaml, platform yaml, and compile yaml
• test for correct target options: Can only list one mutually exclusive target: prod, repro, debug (can list each separately with own -t but not together) --> Target can include openmp with those, but you cannot have both prod and repro listed in one target click entry, for example (not allowed: -t prod-repro)
• failure for nonexistent platform or target
• failure if pointing to nonexistent yaml
• successful creation of checkout script (container - checkout script would be in tmp location, non-container - checkout script would be in modelRoot location)
• successful running of checkout script
• successful creation of makefile
• successful creation of compile script
• successful running of compile script
• successful creation of dockerfile (if -npc and container platform used)
• successful container build