amarisoft_enb: Support zmq rf_driver

Change-Id: I958834d99584e33f632b839a0bd0acccc2379049
diff --git a/src/osmo_gsm_tester/templates/amarisoft_enb.cfg.tmpl b/src/osmo_gsm_tester/templates/amarisoft_enb.cfg.tmpl
index fab1649..532472a 100644
--- a/src/osmo_gsm_tester/templates/amarisoft_enb.cfg.tmpl
+++ b/src/osmo_gsm_tester/templates/amarisoft_enb.cfg.tmpl
@@ -10,6 +10,11 @@
   },
 %endif
 
+% if enb.rf_dev_type == 'zmq':
+  /* Force sampling rate (if uncommented) */
+  sample_rate: ${enb.sample_rate},
+%endif
+
   /* Log filter: syntax: layer.field=value[,...]
 
      Possible layers are phy, mac, rlc, pdcp, rrc, nas, s1ap, x2ap, gtpu and