Add enrich qa module for rest tests and (#41568)

move put policy api yaml test to this rest module.

The main benefit is that all tests will then be run when running:
`./gradlew -p x-pack/plugin/enrich check`

The rest qa module starts a node with default distribution and basic
license.

This qa module will also be used for adding different rest tests (not yaml),
for example rest tests needed for #41532

Also when we are going to work on security integration then we can
add a security qa module under the qa folder. Also at some point
we should add a multi node qa module.

x-pack/plugin/enrich/build.gradle

@@ -22,3 +22,12 @@ run {
 
 // No tests yet:
 integTest.enabled = false
+
+// add all sub-projects of the qa sub-project
+gradle.projectsEvaluated {
+    project.subprojects
+            .find { it.path == project.path + ":qa" }
+            .subprojects
+            .findAll { it.path.startsWith(project.path + ":qa") }
+            .each { check.dependsOn it.check }
+}

x-pack/plugin/enrich/qa/build.gradle

@@ -0,0 +1,17 @@
+import org.elasticsearch.gradle.test.RestIntegTestTask
+
+apply plugin: 'elasticsearch.build'
+test.enabled = false
+
+dependencies {
+  compile project(':test:framework')
+}
+
+subprojects {
+  project.tasks.withType(RestIntegTestTask) {
+    final File xPackResources = new File(xpackProject('plugin').projectDir, 'src/test/resources')
+    project.copyRestSpec.from(xPackResources) {
+      include 'rest-api-spec/api/**'
+    }
+  }
+}

x-pack/plugin/enrich/qa/rest/build.gradle

@@ -0,0 +1,19 @@
+import org.elasticsearch.gradle.test.RestIntegTestTask
+
+apply plugin: 'elasticsearch.standalone-test'
+
+dependencies {
+    testCompile project(path: xpackModule('enrich'), configuration: 'runtime')
+}
+
+task restTest(type: RestIntegTestTask) {
+    mustRunAfter(precommit)
+}
+
+restTestCluster {
+    distribution 'default'
+    setting 'xpack.license.self_generated.type', 'basic'
+}
+
+check.dependsOn restTest
+test.enabled = false

x-pack/plugin/enrich/qa/rest/src/test/java/org/elasticsearch/xpack/enrich/EnrichRestIT.java

@@ -0,0 +1,24 @@
+/*
+ * 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.enrich;
+
+import com.carrotsearch.randomizedtesting.annotations.ParametersFactory;
+import org.elasticsearch.test.rest.yaml.ClientYamlTestCandidate;
+import org.elasticsearch.test.rest.yaml.ESClientYamlSuiteTestCase;
+
+public class EnrichRestIT extends ESClientYamlSuiteTestCase {
+
+    public EnrichRestIT(final ClientYamlTestCandidate testCandidate) {
+        super(testCandidate);
+    }
+
+    @ParametersFactory
+    public static Iterable<Object[]> parameters() throws Exception {
+        return ESClientYamlSuiteTestCase.createParameters();
+    }
+
+}