Removed clientID check and added const value

cmd/ocm/login/cmd.go

@@ -32,6 +32,7 @@ const (
 	productionURL  = "https://api.openshift.com"
 	stagingURL     = "https://api.stage.openshift.com"
 	integrationURL = "https://api.integration.openshift.com"
+	oauthClientID  = "cloud-services"
 )
 
 // When the value of the `--url` option is one of the keys of this map it will be replaced by the
@@ -163,13 +164,10 @@ func run(cmd *cobra.Command, argv []string) error {
 	}
 
 	if args.oauthLogin {
-		if args.clientID == "" {
-			return fmt.Errorf("Option '--client-id' is mandatory")
-		}
 		fmt.Println("You will now be redirected to Red Hat SSO login")
-		token, err := authentication.VerifyLogin(args.clientID)
+		token, err := authentication.VerifyLogin(oauthClientID)
 		if err != nil {
-			return fmt.Errorf(err.Error())
+			return err
 		}
 		args.token = token
 	}