net/templates: support running osmo-bts-virtual

New config variables:
* BTS0_RUN_IN_OSMO_DEV
* BTS0_IP
* BTS1_RUN_IN_OSMO_DEV
* BTS1_IP

Change-Id: Ibc8efe75abffcefc0a719b6323a9ceca39f14ea1
diff --git a/net/templates/osmo-bts-1.cfg b/net/templates/osmo-bts-1.cfg
new file mode 100644
index 0000000..e4e3c64
--- /dev/null
+++ b/net/templates/osmo-bts-1.cfg
@@ -0,0 +1,12 @@
+${include(common_template_warning)}
+${include(common_osmo_bts)}
+
+bts 0
+ ipa unit-id ${BTS1_IPA_UNIT}
+ oml remote-ip ${BSC1_IP}
+
+ctrl
+ bind ${BTS1_IP}
+
+line vty
+ bind ${BTS1_IP}