Mute security-cli tests in FIPS JVM (#32812)

All Unit tests in this module are muted in FIPS 140 JVMs and
 as such the CI run fails. This commit disables test task for the
module in a  FIPS JVM and reverts adding a dummy test in 
4cbcc1.

x-pack/plugin/security/cli/build.gradle

@@ -18,3 +18,7 @@ dependencies {
 dependencyLicenses {
     mapping from: /bc.*/, to: 'bouncycastle'
 }
+
+if (inFipsJvm) {
+    test.enabled = false
+}

x-pack/plugin/security/cli/src/test/java/org/elasticsearch/xpack/security/cli/TestSuiteCannotBeEmptyTests.java

@@ -1,16 +0,0 @@
-/*
- * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
- * or more contributor license agreements. Licensed under the Elastic License;
- * you may not use this file except in compliance with the Elastic License.
- */
-
-package org.elasticsearch.xpack.security.cli;
-
-import org.elasticsearch.test.ESTestCase;
-
-public class TestSuiteCannotBeEmptyTests extends ESTestCase {
-
-    public void testIsHereSoThisSuiteIsNonEmpty() {
-        // This is needed on a FIPS JVM as the rest of the suite is skipped
-    }
-}