Enable checkstyle Javadoc Comment Style rule

Turn on the Javadoc Comment Style rule and fix
any violations that come up.  This is related to
requiring javadoc description comments to end
with a '.'

Change-Id: I19cf1b9f00d3040987e0b4c8b39461e2e0ad66b5
diff --git a/src/main/java/net/onrc/onos/apps/bgproute/BgpRoute.java b/src/main/java/net/onrc/onos/apps/bgproute/BgpRoute.java
index b1100ee..c34e773 100644
--- a/src/main/java/net/onrc/onos/apps/bgproute/BgpRoute.java
+++ b/src/main/java/net/onrc/onos/apps/bgproute/BgpRoute.java
@@ -500,7 +500,7 @@
 
     /**
      * Add a flow to match dst-IP prefix and rewrite MAC for one IP prefix
-     * to all other border switches
+     * to all other border switches.
      */
     private void addPrefixFlows(Prefix prefix, Interface egressInterface,
                                 MACAddress nextHopMacAddress) {
@@ -682,7 +682,7 @@
 
     /**
      * On startup, we need to calculate a full mesh of paths between all gateway
-     * switches
+     * switches.
      */
     private void setupFullMesh() {
         //For each border router, calculate and install a path from every other
@@ -799,7 +799,7 @@
 
     /**
      * Proactively install all BGP traffic paths from BGP host attachment point
-     * in SDN network to all the virtual gateways to BGP peers in other networks
+     * in SDN network to all the virtual gateways to BGP peers in other networks.
      */
     private void setupBgpPaths() {