Remove service_subset field from ingress config entry

We decided that this was not a useful MVP feature, and just added
unnecessary complexity

agent/structs/config_entry.go

@@ -385,13 +385,11 @@ func ConfigEntryDecodeRulesForKind(kind string) (skipWhenPatching []string, tran
 		}, nil
 	case IngressGateway:
 		return []string{
-				"listeners",
-				"Listeners",
-				"listeners.services",
-				"Listeners.Services",
-			}, map[string]string{
-				"service_subset": "servicesubset",
-			}, nil
+			"listeners",
+			"Listeners",
+			"listeners.services",
+			"Listeners.Services",
+		}, nil, nil
 	case TerminatingGateway:
 		return []string{
 				"services",

agent/structs/config_entry_gateways.go

@@ -51,11 +51,6 @@ type IngressService struct {
 	// protocol and means that the listener will forward traffic to all services.
 	Name string
 
-	// ServiceSubset declares the specific service subset to which traffic should
-	// be sent. This must match an existing service subset declared in a
-	// service-resolver config entry.
-	ServiceSubset string
-
 	EnterpriseMeta `hcl:",squash" mapstructure:",squash"`
 }
 

agent/structs/config_entry_test.go

@@ -566,7 +566,6 @@ func TestDecodeConfigEntry(t *testing.T) {
 						services = [
 							{
 								name = "postgres"
-								service_subset = "v1"
 							}
 						]
 					}
@@ -603,7 +602,6 @@ func TestDecodeConfigEntry(t *testing.T) {
 						Services = [
 							{
 								Name = "postgres"
-								ServiceSubset = "v1"
 							}
 						]
 					}
@@ -639,8 +637,7 @@ func TestDecodeConfigEntry(t *testing.T) {
 						Protocol: "tcp",
 						Services: []IngressService{
 							IngressService{
-								Name:          "postgres",
-								ServiceSubset: "v1",
+								Name: "postgres",
 							},
 						},
 					},

api/config_entry_gateways.go

@@ -60,11 +60,6 @@ type IngressService struct {
 	// Namespace is the namespace where the service is located.
 	// Namespacing is a Consul Enterprise feature.
 	Namespace string `json:",omitempty"`
-
-	// ServiceSubset declares the specific service subset to which traffic should
-	// be sent. This must match an existing service subset declared in a
-	// service-resolver config entry.
-	ServiceSubset string
 }
 
 func (i *IngressGatewayConfigEntry) GetKind() string {

command/config/write/config_write_test.go

@@ -1395,7 +1395,6 @@ func TestParseConfigEntry(t *testing.T) {
 						services = [
 							{
 								name = "web"
-								service_subset = "v1"
 							},
 							{
 								name = "db"
@@ -1415,7 +1414,6 @@ func TestParseConfigEntry(t *testing.T) {
 						Services = [
 							{
 								Name = "web"
-								ServiceSubset = "v1"
 							},
 							{
 								Name = "db"
@@ -1435,8 +1433,7 @@ func TestParseConfigEntry(t *testing.T) {
 						"protocol": "http",
 						"services": [
 							{
-								"name": "web",
-								"service_subset": "v1"
+								"name": "web"
 							},
 							{
 								"name": "db",
@@ -1457,8 +1454,7 @@ func TestParseConfigEntry(t *testing.T) {
 						"Protocol": "http",
 						"Services": [
 							{
-								"Name": "web",
-								"ServiceSubset": "v1"
+								"Name": "web"
 							},
 							{
 								"Name": "db",
@@ -1478,8 +1474,7 @@ func TestParseConfigEntry(t *testing.T) {
 						Protocol: "http",
 						Services: []api.IngressService{
 							{
-								Name:          "web",
-								ServiceSubset: "v1",
+								Name: "web",
 							},
 							{
 								Name:      "db",