hnbgw: Handle PFCP Assoc Setup procedure in test_CTHandle PFCP Assoc Setup Req during PFCP initialization in main test_CT.This simplifies test logic.Depends: osmo-hnbgw.git Change-Id Ic71df8df83e97f4015077677e426c803f84d31eaChange-Id: Ic5edecea86b9465c60f008e245a44cfce64c8ddb