Update rroemhild/test-openldap Docker tag to v2 (#150)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

src/test/java/org/jenkinsci/plugins/reverse_proxy_auth/docker/PlanetExpressTest.java

@@ -25,7 +25,7 @@
 public class PlanetExpressTest {
 
     static final String TEST_IMAGE =
-            "rroemhild/test-openldap:1.1@sha256:ebecc2aa0c5afaadddcbd734698d7c356b0e1b1f9af0bf8bc1889ff275f2bcde";
+            "rroemhild/test-openldap:2.1@sha256:133952e806f6e88af4a7a24dc5714e27cdddb41fceeff5ff4f384ae1d836db26";
     static final String DN = "dc=planetexpress,dc=com";
     static final String MANAGER_DN = "cn=admin,dc=planetexpress,dc=com";
     static final String MANAGER_SECRET = "GoodNewsEveryone";
@@ -44,7 +44,7 @@ public static void linuxOnly() {
 
     @SuppressWarnings("rawtypes")
     @Rule
-    public GenericContainer container = new GenericContainer(TEST_IMAGE).withExposedPorts(389);
+    public GenericContainer container = new GenericContainer(TEST_IMAGE).withExposedPorts(10389);
 
     @Rule
     public RealJenkinsRule rr = new RealJenkinsRule();