Merge pull request #607 from mattmoyer/fix-eks-nested-impersonation-tests

Fix TestImpersonationProxy on EKS.

test/integration/concierge_impersonation_proxy_test.go

@@ -1705,8 +1705,8 @@ func getCredForConfig(t *testing.T, config *rest.Config) *loginv1alpha1.ClusterC
 	if tlsConfig != nil && tlsConfig.GetClientCertificate != nil {
 		cert, err := tlsConfig.GetClientCertificate(nil)
 		require.NoError(t, err)
+		if len(cert.Certificate) > 0 {
 			require.Len(t, cert.Certificate, 1)
-
 			publicKey := pem.EncodeToMemory(&pem.Block{
 				Type:  "CERTIFICATE",
 				Bytes: cert.Certificate[0],
@@ -1717,6 +1717,7 @@ func getCredForConfig(t *testing.T, config *rest.Config) *loginv1alpha1.ClusterC
 			require.NoError(t, err)
 			out.ClientKeyData = string(privateKey)
 		}
+	}
 
 	if *out == (loginv1alpha1.ClusterCredential{}) {
 		t.Fatal("failed to get creds for config")