port ScOutlineObj to new UnoApiTest ctor

That makes 'make subsequentcheck' pass here again.

Change-Id: I50d74759b6ae6cd2bfa62a76028dc74931ffb3b0

sc/qa/extras/scoutlineobj.cxx

@@ -65,6 +65,7 @@ sal_Int32 ScOutlineObj::nTest = 0;
 uno::Reference< lang::XComponent > ScOutlineObj::mxComponent;
 
 ScOutlineObj::ScOutlineObj()
+    : UnoApiTest("/sc/qa/extras/testdocuments")
 {
 }