Modif in the conf file - reduce max_rxgain and att_tx

ci-scripts/conf_files/gnb-du.sa.band1.52prb.usrpb210.conf

@@ -192,11 +192,11 @@ RUs = (
          nb_rx          = 1
          # The higher att for TX than RX is because we use a circulator (as for TDD),
          # while we should use a duplexer in the FDD case. However, it uses the same setup.
-         att_tx         = 20
+         att_tx         = 18
          att_rx         = 0;
          bands          = [1];
          max_pdschReferenceSignalPower = -27;
-         max_rxgain                    = 112;
+         max_rxgain                    = 108;
          eNB_instances  = [0];
          #beamforming 1x4 matrix:
          bf_weights = [0x00007fff, 0x0000, 0x0000, 0x0000];