aiaiai-email-test-patchset: move -- to end of all options

A previous patch added kmake_opts to the configuration file, and when
passing this into aiaiai-test-patchset, the -- field which ends option
scanning was not correctly moved to the end of the options arguments.
This would result in incorrect behavior if anyone tried to use this
option.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>