msc: add MSC_Tests.TC_call_re_establishment

The osmo-msc patch that makes this test pass is
I6fa37d6ca9fcb1637742b40e37b68d67664c9b60

Related: SYS#5130
Change-Id: Ifdff5573eeb3b3d41e8599b9b0228411d2576864
1 file changed