MNCC_Emulation: allow moving call handling to another test component

Will be used by MSC_Tests.TC_call_re_establishment in
Ifdff5573eeb3b3d41e8599b9b0228411d2576864
where a call from one vc_conn gets re-established in another vc_conn.

Related: SYS#5130
Change-Id: If7e952e54ebd1bb88cce11ec5f0ff4826e02cb63
1 file changed