Fix test artifact requirements for serverless

Author: breskeby

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

@@ -4,7 +4,8 @@
  * 2.0; you may not use this file except in compliance with the Elastic License
  * 2.0.
  */
-
+ 
+apply plugin: 'elasticsearch.internal-test-artifact'
 apply plugin: 'elasticsearch.internal-java-rest-test'
 apply plugin: 'elasticsearch.internal-yaml-rest-test'
 apply plugin: 'elasticsearch.yaml-rest-compat-test'

x-pack/plugin/esql/qa/server/mixed-cluster/build.gradle

@@ -10,6 +10,7 @@ import org.elasticsearch.gradle.VersionProperties
 import org.elasticsearch.gradle.util.GradleUtils
 import org.elasticsearch.gradle.testclusters.StandaloneRestIntegTestTask
 
+apply plugin: 'elasticsearch.internal-test-artifact'
 apply plugin: 'elasticsearch.internal-java-rest-test'
 apply plugin: 'elasticsearch.internal-yaml-rest-test'
 apply plugin: 'elasticsearch.bwc-test'

x-pack/plugin/esql/qa/server/multi-node/build.gradle

@@ -1,5 +1,6 @@
 import org.elasticsearch.gradle.util.GradleUtils
 
+apply plugin: 'elasticsearch.internal-test-artifact'
 apply plugin: 'elasticsearch.internal-java-rest-test'
 apply plugin: 'elasticsearch.internal-yaml-rest-test'
 apply plugin: org.elasticsearch.gradle.internal.precommit.CheckstylePrecommitPlugin