Export top-level HCP Enabled go-template variable for UI (#13165)

* Update ui template data to export HCPEnabled at the top level

agent/uiserver/ui_template_data.go

@@ -31,6 +31,7 @@ func uiTemplateDataFromConfig(cfg *config.RuntimeConfig) (map[string]interface{}
 	d := map[string]interface{}{
 		"ContentPath":       cfg.UIConfig.ContentPath,
 		"ACLsEnabled":       cfg.ACLsEnabled,
+		"HCPEnabled":        cfg.UIConfig.HCPEnabled,
 		"UIConfig":          uiCfg,
 		"LocalDatacenter":   cfg.Datacenter,
 		"PrimaryDatacenter": cfg.PrimaryDatacenter,

agent/uiserver/uiserver_test.go

@@ -39,6 +39,7 @@ func TestUIServerIndex(t *testing.T) {
 			wantContains: []string{"<!-- CONSUL_VERSION:"},
 			wantUICfgJSON: `{
 				"ACLsEnabled": false,
+				"HCPEnabled": false,
 				"LocalDatacenter": "dc1",
 				"PrimaryDatacenter": "dc1",
 				"ContentPath": "/ui/",
@@ -73,6 +74,7 @@ func TestUIServerIndex(t *testing.T) {
 			},
 			wantUICfgJSON: `{
 				"ACLsEnabled": false,
+				"HCPEnabled": false,
 				"LocalDatacenter": "dc1",
 				"PrimaryDatacenter": "dc1",
 				"ContentPath": "/ui/",
@@ -95,6 +97,7 @@ func TestUIServerIndex(t *testing.T) {
 			wantContains: []string{"<!-- CONSUL_VERSION:"},
 			wantUICfgJSON: `{
 				"ACLsEnabled": true,
+				"HCPEnabled": false,
 				"LocalDatacenter": "dc1",
 				"PrimaryDatacenter": "dc1",
 				"ContentPath": "/ui/",
@@ -114,6 +117,7 @@ func TestUIServerIndex(t *testing.T) {
 			wantContains: []string{"<!-- CONSUL_VERSION:"},
 			wantUICfgJSON: `{
 				"ACLsEnabled": false,
+				"HCPEnabled": true,
 				"LocalDatacenter": "dc1",
 				"PrimaryDatacenter": "dc1",
 				"ContentPath": "/ui/",
@@ -143,6 +147,7 @@ func TestUIServerIndex(t *testing.T) {
 			},
 			wantUICfgJSON: `{
 				"ACLsEnabled": false,
+				"HCPEnabled": false,
 				"SSOEnabled": true,
 				"LocalDatacenter": "dc1",
 				"PrimaryDatacenter": "dc1",
@@ -413,6 +418,7 @@ func TestHandler_ServeHTTP_TransformIsEvaluatedOnEachRequest(t *testing.T) {
 		require.Equal(t, http.StatusOK, rec.Code)
 		expected := `{
 		"ACLsEnabled": false,
+		"HCPEnabled": false,
 		"LocalDatacenter": "dc1",
 		"PrimaryDatacenter": "dc1",
 		"ContentPath": "/ui/",
@@ -437,6 +443,7 @@ func TestHandler_ServeHTTP_TransformIsEvaluatedOnEachRequest(t *testing.T) {
 		require.Equal(t, http.StatusOK, rec.Code)
 		expected := `{
 			"ACLsEnabled": false,
+			"HCPEnabled": false,
 			"LocalDatacenter": "dc1",
 			"PrimaryDatacenter": "dc1",
 			"ContentPath": "/ui/",