@Override
    public void tearDown() throws Exception {
        kdcServer.close();
        System.clearProperty("java.security.auth.login.config");
        super.tearDown();
    }
Test audit logs. Like other descendants of AbstractGremlinServerIntegrationTest this test suite assumes that
tests are run sequentially and thus the server and kdcServer variables can be reused.

@author Marc de Lignie
gremlin-server/src/test/java/org/apache/tinkerpop/gremlin/server/GremlinServerAuditLogIntegrateTest.java