Add version number 4.0.2.

Change-Id: I292eba5391367e0aae123179e1d20a18e6807dd7
Reviewed-on: https://git-ccr-1.devtools.intel.com/gerrit/97818
Reviewed-by: Qiu, Jianlin <[email protected]>
Tested-by: Qiu, Jianlin <[email protected]>

Author: jianjunz

peerserver.js

@@ -95,6 +95,7 @@ function authorization(socket, next){
   switch(clientVersion){
     case '4.0':
     case '4.0.1':
+    case '4.0.2':
       // socket.user stores session related information.
       if(token){
         validateUser(token, function(uid){  // Validate user's token successfully.