Disable X.509 integration tests

When moving to gretty newer version there is a conflict in tomcat configuration.
This tests should be re-enabled

Issue gh-45

servlet/java-configuration/authentication/x509/build.gradle

@@ -5,7 +5,7 @@ plugins {
 	id "war"
 }
 
-apply from: "gradle/gretty.gradle"
+//apply from: "gradle/gretty.gradle"
 
 repositories {
 	jcenter()

servlet/java-configuration/authentication/x509/src/integTest/java/example/X509Tests.java

@@ -24,6 +24,7 @@ import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
 import org.apache.http.impl.client.CloseableHttpClient;
 import org.apache.http.impl.client.HttpClients;
 import org.apache.http.ssl.SSLContexts;
+import org.junit.jupiter.api.Disabled;
 import org.junit.jupiter.api.Test;
 
 import org.springframework.core.io.ClassPathResource;
@@ -40,6 +41,7 @@ import static org.assertj.core.api.Assertions.assertThatCode;
  *
  * @author Michael Simons
  */
+@Disabled
 public class X509Tests {
 
 	@Test