Enforced Checkstyle rule to limit line length.

Maximum line length is 120 right now (but we might want to think about
reducing it further in the future).

I've fixed the existing lines we had that violated the rule.

Change-Id: I077d0c427d35e1c5033aab45ed3fbbbf1d106e89
diff --git a/src/main/java/net/onrc/onos/core/intent/ShortestPathIntent.java b/src/main/java/net/onrc/onos/core/intent/ShortestPathIntent.java
index 1940daa..92f57ad 100644
--- a/src/main/java/net/onrc/onos/core/intent/ShortestPathIntent.java
+++ b/src/main/java/net/onrc/onos/core/intent/ShortestPathIntent.java
@@ -179,10 +179,13 @@
 
     @Override
     public String toString() {
-        return String.format("id:%s, state:%s, srcDpid:%s, srcPort:%d, srcMac:%s, srcIP:%s, dstDpid:%s, dstPort:%d, dstMac:%s, dstIP:%s",
+        return String.format("id:%s, state:%s, srcDpid:%s, srcPort:%d, " +
+                "srcMac:%s, srcIP:%s, dstDpid:%s, dstPort:%d, dstMac:%s, dstIP:%s",
                 getId(), getState(),
-                new Dpid(srcSwitchDpid), srcPortNumber, MACAddress.valueOf(srcMacAddress), Integer.toString(srcIpAddress),
-                new Dpid(dstSwitchDpid), dstPortNumber, MACAddress.valueOf(dstMacAddress), Integer.toString(dstIpAddress));
+                new Dpid(srcSwitchDpid), srcPortNumber,
+                MACAddress.valueOf(srcMacAddress), Integer.toString(srcIpAddress),
+                new Dpid(dstSwitchDpid), dstPortNumber,
+                MACAddress.valueOf(dstMacAddress), Integer.toString(dstIpAddress));
     }
 
     public int getSrcIp() {