SA config files define GNB_PORT_FOR_S1U instead of GNB_PORT_FOR_NGU
When running gNB in SA mode, i.e., in the CI, config files used are filled with GNB_PORT_FOR_S1U parameter while the parameter to be configured should be GNB_PORT_FOR_NGU. Either both GNB_PORT_FOR_S1U and GNB_PORT_FOR_NGU should be specified or only GNB_PORT_FOR_NGU.