The processCcd gen2 checks should be moved to pipelines_check which is already running the gen3 equivalent (isrTask/characterizeTask/calibrateTask).

The primary tests in test_processCCD.py are validation tests that certain values haven't changed; these will be ported. There are additional tests that run the tasks via command-line and via task.run and check identical outputs, and these are superfluous gen2-only workflow tests that are not going to be ported.