[ONOS-6879] Adding Controller Metrics Application, To retrive memory, Disk and CPU usage for all controller

Change-Id: I5976f0194555c1c3c42d6b6d09c468d6dfc983ff
diff --git a/lib/deps.json b/lib/deps.json
index 690cb38..701aed1 100644
--- a/lib/deps.json
+++ b/lib/deps.json
@@ -286,6 +286,7 @@
     "aalto-xml": "mvn:com.fasterxml:aalto-xml:1.0.0",
     "stax2-api": "mvn:org.codehaus.woodstox:stax2-api:4.0.0",
     "concurrent-hashmap": "mvn:com.googlecode.concurrentlinkedhashmap:concurrentlinkedhashmap-lru:1.0",
-    "gnu-idn": "mvn:org.gnu.inet:libidn:1.15"
+    "gnu-idn": "mvn:org.gnu.inet:libidn:1.15",
+    "sigar":"mvn:org.knowhowlab.osgi:sigar:1.6.5_01"
   }
 }