BSC_Tests.ttcn: Split f_connect_handler() off f_start_handler()

In case we want to derive other component types by extending
MSC_ConnectionHandler, we will want to connect additional ports
before starting the component.

Hence, split the connect part into f_create_handler(), while keeping
the create + start part in f_start_handler().

Change-Id: If272816b7e720e8b8f000f7ab8baa20619b35fb7
1 file changed