Fixed port mapping, enabled privileged mode.

Author: mbaedke

oak-store-document/src/test/java/org/apache/jackrabbit/oak/plugins/document/RdbUtils.java

@@ -46,7 +46,7 @@ public class RdbUtils {
                 rule.apply(new Statement() {
                     @Override
                     public void evaluate() {
-                        port.set(rule.getExposedPort());
+                        port.set(rule.getMappedPort());
                     }
                 }, Description.EMPTY).evaluate();
             }

oak-store-document/src/test/java/org/apache/jackrabbit/oak/plugins/document/rdb/RdbDockerRule.java

@@ -80,6 +80,7 @@ protected void before() throws Throwable {
             return;
         }
         rdbContainer = new GenericContainer<>(IMAGE)
+                .withPrivilegedMode(true)
                 .withExposedPorts(exposedPort)
                 .withStartupTimeout(Duration.ofMinutes(15));