ftests: Add invalid parameter test for cgconfigparser

ftests: Add invalid parameter test for cgconfigparser

Add a test that provides invalid parameters into cgconfigparser.

-----------------------------------------------------------------
Test Results:
        Run Date:                          Mar 10 02:15:56
        Passed:                                  1 test(s)
        Skipped:                                 0 test(s)
        Failed:                                  0 test(s)
-----------------------------------------------------------------
Timing Results:
        Test                                    Time (sec)
        ---------------------------------------------------------
        setup                                        13.46
        021-cgconfig-invalid_options.py               0.31
        teardown                                      0.00
        ---------------------------------------------------------
        Total Run Time                               13.77

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