ElasticContainer: Bump V7_0 test server to 7.0.0-beta1

As listed in the "Breaking changes" section of the release notes [1],
index creation requests are rejected when the include_type_name
parameter is not set to "true". This is a new parameter introduced
in 7.0.0, so we set it conditionally only for that version.

[1] https://www.elastic.co/guide/en/elasticsearch/reference/7.0/release-notes-7.0.0-beta1.html

Change-Id: I71ac74567eba11cf4150619a2cb95dce4386ac0f

gerrit-elasticsearch/src/main/java/com/google/gerrit/elasticsearch/AbstractElasticIndex.java

@@ -163,7 +163,9 @@ abstract class AbstractElasticIndex<K, V> implements Index<K, V> {
 
     // Recreate the index.
     String indexCreationFields = concatJsonString(getSettings(), getMappings());
-    response = performRequest("PUT", indexName, indexCreationFields);
+    response =
+        performRequest(
+            "PUT", indexName + client.adapter().includeTypeNameParam(), indexCreationFields);
     statusCode = response.getStatusLine().getStatusCode();
     if (statusCode != HttpStatus.SC_OK) {
       String error = String.format("Failed to create index %s: %s", indexName, statusCode);

gerrit-elasticsearch/src/main/java/com/google/gerrit/elasticsearch/ElasticQueryAdapter.java

@@ -29,6 +29,7 @@ public class ElasticQueryAdapter {
   private final String stringFieldType;
   private final String indexProperty;
   private final String versionDiscoveryUrl;
+  private final String includeTypeNameParam;
 
   ElasticQueryAdapter(ElasticVersion version) {
     this.ignoreUnmapped = false;
@@ -40,6 +41,7 @@ public class ElasticQueryAdapter {
     this.exactFieldType = "keyword";
     this.stringFieldType = "text";
     this.indexProperty = "true";
+    this.includeTypeNameParam = version.isV7OrLater() ? "?include_type_name=true" : "";
   }
 
   void setIgnoreUnmapped(JsonObject properties) {
@@ -89,4 +91,8 @@ public class ElasticQueryAdapter {
   String getVersionDiscoveryUrl(String name) {
     return String.format(versionDiscoveryUrl, name);
   }
+
+  String includeTypeNameParam() {
+    return includeTypeNameParam;
+  }
 }

gerrit-elasticsearch/src/test/java/com/google/gerrit/elasticsearch/ElasticContainer.java

@@ -49,7 +49,7 @@ public class ElasticContainer extends ElasticsearchContainer {
       case V6_6:
         return "docker.elastic.co/elasticsearch/elasticsearch-oss:6.6.0";
       case V7_0:
-        return "docker.elastic.co/elasticsearch/elasticsearch-oss:7.0.0-alpha2";
+        return "docker.elastic.co/elasticsearch/elasticsearch-oss:7.0.0-beta1";
     }
     throw new IllegalStateException("No tests for version: " + version.name());
   }