srsenb_sib.conf.tmpl: reduce the default size of the PUCCH

optimized PUCCH config

Change-Id: I45ae7c33f9d1df20df37c0fe6c3d73aa85ae1b31
diff --git a/src/osmo_gsm_tester/templates/srsenb_sib.conf.tmpl b/src/osmo_gsm_tester/templates/srsenb_sib.conf.tmpl
index c738480..7451131 100644
--- a/src/osmo_gsm_tester/templates/srsenb_sib.conf.tmpl
+++ b/src/osmo_gsm_tester/templates/srsenb_sib.conf.tmpl
@@ -77,8 +77,8 @@
         };
         pucch_cnfg =
         {
-            delta_pucch_shift = 2;
-            n_rb_cqi = 2;
+            delta_pucch_shift = 1;
+            n_rb_cqi = 1;
             n_cs_an = 0;
             n1_pucch_an = 12;
         };