Incorporate review comment for CLI

Author: Satish Ramachandran

netctl/commands.go

@@ -51,13 +51,13 @@ var Commands = []cli.Command{
 				ArgsUsage: "[network] [group]",
 				Flags: []cli.Flag{
 					tenantFlag,
-					cli.StringFlag{
+					cli.StringSliceFlag{
 						Name:  "policy, p",
-						Usage: "Policy List (separated by commas)",
+						Usage: "Policy",
 					},
-					cli.StringFlag{
-						Name:  "external-contracts, e",
-						Usage: "External contracts(separated by commas)",
+					cli.StringSliceFlag{
+						Name:  "external-contract, e",
+						Usage: "External contract",
 					},
 				},
 				Action: createEndpointGroup,
@@ -291,9 +291,9 @@ var Commands = []cli.Command{
 						Name:  "provided, p",
 						Usage: "External contracts type - provided",
 					},
-					cli.StringFlag{
-						Name:  "contracts, a",
-						Usage: "Contracts (separated by commas)",
+					cli.StringSliceFlag{
+						Name:  "contract, a",
+						Usage: "Contract",
 					},
 				},
 				Action: createExternalContracts,

netctl/netctl.go

@@ -396,15 +396,9 @@ func createEndpointGroup(ctx *cli.Context) {
 	network := ctx.Args()[0]
 	group := ctx.Args()[1]
 
-	policies := strings.Split(ctx.String("policy"), ",")
-	if ctx.String("policy") == "" {
-		policies = []string{}
-	}
+	policies := ctx.StringSlice("policy")
 
-	extContractsGrps := strings.Split(ctx.String("external-contracts"), ",")
-	if ctx.String("external-contracts") == "" {
-		extContractsGrps = []string{}
-	}
+	extContractsGrps := ctx.StringSlice("external-contract")
 
 	errCheck(ctx, getClient(ctx).EndpointGroupPost(&contivClient.EndpointGroup{
 		TenantName:       tenant,
@@ -865,8 +859,8 @@ func createExternalContracts(ctx *cli.Context) {
 
 	tenant := ctx.String("tenant")
 
-	contracts := strings.Split(ctx.String("contracts"), ",")
-	if ctx.String("contracts") == "" {
+	contracts := ctx.StringSlice("contracts")
+	if len(contracts) == 0 {
 		errExit(ctx, exitHelp, "Contracts not provided", false)
 	}