Fixed bug ONOS-5572 . Problem was in BUCK file where dependency lib:mibs-rfc was not declared

Change-Id: I859b0a95ab481f885f5f133b655c71a235174c2f
diff --git a/providers/snmp/BUCK b/providers/snmp/BUCK
index 7f00af1..eca6599 100644
--- a/providers/snmp/BUCK
+++ b/providers/snmp/BUCK
@@ -3,6 +3,7 @@
   '//protocols/snmp/api:onos-protocols-snmp-api',
   '//protocols/snmp/ctl:onos-protocols-snmp-ctl',
   '//lib:org.apache.servicemix.bundles.snmp4j',
+  '//lib:mibs-rfc',
   '//lib:snmp-core',
   '//lib:bti7000',
   '//lib:mibs-net-snmp',