msc: split f_start_handler_with_pars()

To allow running connect() on the COORD ports of test components before
starting the test component but after creating it, split
f_start_handler_with_pars() into f_start_handler_create() and _run().

Will be used by MSC_Tests.TC_call_re_establishment in
Ifdff5573eeb3b3d41e8599b9b0228411d2576864

Related: SYS#5130
Change-Id: Ic7e9dbb8c9db5948fe35fc3051bb988d65622782
1 file changed