HPCC-11468 Argparse Python library throws exception in overnight test
based on dependency.

Add collections library totesting/regress/hpcc/util directory.

Change arpgparse to use local collections library.

Signed-off-by: Attila Vamos <attila.vamos@gmail.com>
Merge pull request #5913 from AttilaVamos/HPCC-11468-fix

HPCC-11468 Argparse Python library throws exception in overnight test based on dependency

Reviewed-By: Richard Chapman <rchapman@hpccsystems.com>