tests/extmod/ure_group: Add test for non-capturing group.
tests/extmod/ure_group: Add test for non-capturing group.

Change-Id: I75e3fa118da880f42212b41622bb7fc2ec6b8e1f

pfalcon/micropython,pfalcon/micropython,pfalcon/micropython,pfalcon/micropython,pfalcon/micropython