Merge pull request contiv-experimental#11 from abhinandanpb/master

making gateway optional attribute

Author: shaleman

contivModel.go

@@ -1839,11 +1839,6 @@ func ValidateNetwork(obj *Network) error {
 		return errors.New("encap string invalid format")
 	}
 
-	gatewayMatch := regexp.MustCompile("^([0-9]{1,3}?.[0-9]{1,3}?.[0-9]{1,3}?.[0-9]{1,3}?)$")
-	if gatewayMatch.MatchString(obj.Gateway) == false {
-		return errors.New("gateway string invalid format")
-	}
-
 	if len(obj.NetworkName) > 64 {
 		return errors.New("networkName string too long")
 	}

network.json

@@ -36,7 +36,6 @@
 				},
 				"gateway": {
 					"type": "string",
-					"format": "^([0-9]{1,3}?.[0-9]{1,3}?.[0-9]{1,3}?.[0-9]{1,3}?)$",
 					"title": "Gateway",
 					"showSummary": true
 				}