Rework servers load-balancer to use the WRR

Co-authored-by: Kevin Pollet <pollet.kevin@gmail.com>

pkg/middlewares/customerrors/custom_errors_test.go

@@ -188,50 +188,3 @@ type mockServiceBuilder struct {
 func (m *mockServiceBuilder) BuildHTTP(_ context.Context, _ string) (http.Handler, error) {
 	return m.handler, nil
 }
-
-func TestNewResponseRecorder(t *testing.T) {
-	testCases := []struct {
-		desc     string
-		rw       http.ResponseWriter
-		expected http.ResponseWriter
-	}{
-		{
-			desc:     "Without Close Notify",
-			rw:       httptest.NewRecorder(),
-			expected: &codeModifierWithoutCloseNotify{},
-		},
-		{
-			desc:     "With Close Notify",
-			rw:       &mockRWCloseNotify{},
-			expected: &codeModifierWithCloseNotify{},
-		},
-	}
-
-	for _, test := range testCases {
-		test := test
-		t.Run(test.desc, func(t *testing.T) {
-			t.Parallel()
-
-			rec := newCodeModifier(test.rw, 0)
-			assert.IsType(t, rec, test.expected)
-		})
-	}
-}
-
-type mockRWCloseNotify struct{}
-
-func (m *mockRWCloseNotify) CloseNotify() <-chan bool {
-	panic("implement me")
-}
-
-func (m *mockRWCloseNotify) Header() http.Header {
-	panic("implement me")
-}
-
-func (m *mockRWCloseNotify) Write([]byte) (int, error) {
-	panic("implement me")
-}
-
-func (m *mockRWCloseNotify) WriteHeader(int) {
-	panic("implement me")
-}