OpenFeature: Add context attributes to frontend settings (#112105)

* Update targeting key to namespace

* Pass eval ctx attributes to frontend

* Add context config to the frontend

* Fix OF namespace not defined in e2e tests

* Set default namespace and targeting key

* remove e2e server config now that namespace is default

---------

Co-authored-by: joshhunt <josh.hunt@grafana.com>

pkg/setting/setting_openfeature_test.go

@@ -11,12 +11,13 @@ func Test_CtxAttrs(t *testing.T) {
 	testCases := []struct {
 		name     string
 		conf     string
-		expected map[string]any
+		expected map[string]string
 	}{
 		{
 			name: "empty config - only default attributes should be present",
-			expected: map[string]any{
+			expected: map[string]string{
 				"grafana_version": "",
+				"namespace":       "default",
 			},
 		},
 		{
@@ -26,11 +27,12 @@ func Test_CtxAttrs(t *testing.T) {
 foo = bar
 baz = qux
 quux = corge`,
-			expected: map[string]any{
+			expected: map[string]string{
 				"foo":             "bar",
 				"baz":             "qux",
 				"quux":            "corge",
 				"grafana_version": "",
+				"namespace":       "default",
 			},
 		},
 		{
@@ -39,9 +41,10 @@ quux = corge`,
 [feature_toggles.openfeature.context]
 grafana_version = 10.0.0
 foo = bar`,
-			expected: map[string]any{
+			expected: map[string]string{
 				"grafana_version": "10.0.0",
 				"foo":             "bar",
+				"namespace":       "default",
 			},
 		},
 	}