Verify that configurations are deterministic

See commend from @graven (which I support)

can we please add a test to Moore which does something like:

for i in range(10) : 
   run gaudirun.py -n -o test$i.opts ./Hlt/Hlt2Conf/tests/qmtest/sprucing.qms/test_spruce_all_lines_realtime.qmt`

and then verifies that all the .opts files are identical?

I'd like to make sure that someone who unwittingly makes a similar mistake gets notified immediately of the problem as opposed to someone else tracking this down way later and then having to figure out which change was responsible for the problem....