appman-qmltestrunner does not accept qmltest options

Description:

When running appman-qmltestrunner with options "-- -help" I get a lot of additional options for testing purposes. Especially the "-input" option from original qmltestrunner is very helpful when running multiple tests.

Bug:

When trying one of the options the help text is shown. In front of it I see the message

1> appman-qmltestrunner -c myamconfig.yaml -- -input src/all_tests
Unknown option: '-input'

...
qmltest related options:
 -import    : Specify an import directory.
 -plugins   : Specify a directory where to search for plugins.
 -input     : Specify the root directory for test cases.

 -help      : This help

Expected Result:

All tests from src/all_tests are picked up and run.