add scenario to modify bandwith of 2 eNB objects

required for Inter-eNB HO configs, for example.

Change-Id: Iaf053941ff31c4ba94edf67fc54c0f1c1441577d
diff --git a/sysmocom/scenarios/mod-2enb-nprb@.conf b/sysmocom/scenarios/mod-2enb-nprb@.conf
new file mode 100644
index 0000000..7fbbe26
--- /dev/null
+++ b/sysmocom/scenarios/mod-2enb-nprb@.conf
@@ -0,0 +1,4 @@
+modifiers:
+  enb:
+  - num_prb: ${param1}
+  - num_prb: ${param1}