Add a Polatis SNMP driver

Change-Id: I4ba986d9e7aebb33cbce413b70393db16fc9ffcc
diff --git a/modules.defs b/modules.defs
index 7df940e..3c96b1a 100644
--- a/modules.defs
+++ b/modules.defs
@@ -117,6 +117,7 @@
     '//drivers/gnmi:onos-drivers-gnmi-oar',
     '//drivers/polatis/netconf:onos-drivers-polatis-netconf-oar',
     '//drivers/polatis/openflow:onos-drivers-polatis-openflow-oar',
+    '//drivers/polatis/snmp:onos-drivers-polatis-snmp-oar',
     '//drivers/odtn-driver:onos-drivers-odtn-driver-oar',
 ]