ftests: Add an lscgroup test with multiple '-g' flags

ftests: Add an lscgroup test with multiple '-g' flags

Add an lscgroup test with multiple '-g' flags.

-----------------------------------------------------------------
Test Results:
        Run Date:                          Mar 25 16:35:47
        Passed:                                  1 test(s)
        Skipped:                                 0 test(s)
        Failed:                                  0 test(s)
-----------------------------------------------------------------
Timing Results:
        Test                                    Time (sec)
        ---------------------------------------------------------
        setup                                        14.12
        032-lscgroup-multiple_g_flags.py              4.63
        teardown                                      0.00
        ---------------------------------------------------------
        Total Run Time                               18.75

Signed-off-by: Tom Hromatka <tom.hromatka@oracle.com>