Add support for Elasticsearch version 7.4.*

Upgrade elasticsearch-rest-client to 7.4.0.

Add V7_4 to the version manager, and use this in all the V7 tests.

Use the 7.4.0 image from blacktop in the test container.

Change-Id: Ib993f078c142afe34d6f6be83f745464c16b0d2e
diff --git a/WORKSPACE b/WORKSPACE
index 8856078..77921d9 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -916,8 +916,8 @@
 # and httpasyncclient as necessary.
 maven_jar(
     name = "elasticsearch-rest-client",
-    artifact = "org.elasticsearch.client:elasticsearch-rest-client:7.3.2",
-    sha1 = "38721e908cad8a30fa3f8e659c0571150a60cab3",
+    artifact = "org.elasticsearch.client:elasticsearch-rest-client:7.4.0",
+    sha1 = "481fedd31088ec6ba79a2aeffec3eccae4c0772b",
 )
 
 maven_jar(
diff --git a/gerrit-acceptance-tests/src/test/java/com/google/gerrit/acceptance/pgm/ElasticReindexIT.java b/gerrit-acceptance-tests/src/test/java/com/google/gerrit/acceptance/pgm/ElasticReindexIT.java
index 0da3198..afb8182 100644
--- a/gerrit-acceptance-tests/src/test/java/com/google/gerrit/acceptance/pgm/ElasticReindexIT.java
+++ b/gerrit-acceptance-tests/src/test/java/com/google/gerrit/acceptance/pgm/ElasticReindexIT.java
@@ -37,7 +37,7 @@
 
   @ConfigSuite.Config
   public static Config elasticsearchV7() {
-    return getConfig(ElasticVersion.V7_3);
+    return getConfig(ElasticVersion.V7_4);
   }
 
   @Override
diff --git a/gerrit-acceptance-tests/src/test/java/com/google/gerrit/acceptance/ssh/ElasticIndexIT.java b/gerrit-acceptance-tests/src/test/java/com/google/gerrit/acceptance/ssh/ElasticIndexIT.java
index 839564f..0716d03 100644
--- a/gerrit-acceptance-tests/src/test/java/com/google/gerrit/acceptance/ssh/ElasticIndexIT.java
+++ b/gerrit-acceptance-tests/src/test/java/com/google/gerrit/acceptance/ssh/ElasticIndexIT.java
@@ -36,7 +36,7 @@
 
   @ConfigSuite.Config
   public static Config elasticsearchV7() {
-    return getConfig(ElasticVersion.V7_3);
+    return getConfig(ElasticVersion.V7_4);
   }
 
   @Override
diff --git a/gerrit-elasticsearch/src/main/java/com/google/gerrit/elasticsearch/ElasticVersion.java b/gerrit-elasticsearch/src/main/java/com/google/gerrit/elasticsearch/ElasticVersion.java
index baf3e38..309ee3e5 100644
--- a/gerrit-elasticsearch/src/main/java/com/google/gerrit/elasticsearch/ElasticVersion.java
+++ b/gerrit-elasticsearch/src/main/java/com/google/gerrit/elasticsearch/ElasticVersion.java
@@ -29,7 +29,8 @@
   V7_0("7.0.*"),
   V7_1("7.1.*"),
   V7_2("7.2.*"),
-  V7_3("7.3.*");
+  V7_3("7.3.*"),
+  V7_4("7.4.*");
 
   private final String version;
   private final Pattern pattern;
diff --git a/gerrit-elasticsearch/src/test/java/com/google/gerrit/elasticsearch/ElasticContainer.java b/gerrit-elasticsearch/src/test/java/com/google/gerrit/elasticsearch/ElasticContainer.java
index 265c61c..c3ab63f 100644
--- a/gerrit-elasticsearch/src/test/java/com/google/gerrit/elasticsearch/ElasticContainer.java
+++ b/gerrit-elasticsearch/src/test/java/com/google/gerrit/elasticsearch/ElasticContainer.java
@@ -60,6 +60,8 @@
         return "blacktop/elasticsearch:7.2.1";
       case V7_3:
         return "blacktop/elasticsearch:7.3.2";
+      case V7_4:
+        return "blacktop/elasticsearch:7.4.0";
     }
     throw new IllegalStateException("No tests for version: " + version.name());
   }
diff --git a/gerrit-elasticsearch/src/test/java/com/google/gerrit/elasticsearch/ElasticV7QueryAccountsTest.java b/gerrit-elasticsearch/src/test/java/com/google/gerrit/elasticsearch/ElasticV7QueryAccountsTest.java
index 4a52107..645534d 100644
--- a/gerrit-elasticsearch/src/test/java/com/google/gerrit/elasticsearch/ElasticV7QueryAccountsTest.java
+++ b/gerrit-elasticsearch/src/test/java/com/google/gerrit/elasticsearch/ElasticV7QueryAccountsTest.java
@@ -34,7 +34,7 @@
       return;
     }
 
-    container = ElasticContainer.createAndStart(ElasticVersion.V7_3);
+    container = ElasticContainer.createAndStart(ElasticVersion.V7_4);
     nodeInfo = new ElasticNodeInfo(container.getHttpHost().getPort());
   }
 
diff --git a/gerrit-elasticsearch/src/test/java/com/google/gerrit/elasticsearch/ElasticV7QueryChangesTest.java b/gerrit-elasticsearch/src/test/java/com/google/gerrit/elasticsearch/ElasticV7QueryChangesTest.java
index 2301082..c3432d3 100644
--- a/gerrit-elasticsearch/src/test/java/com/google/gerrit/elasticsearch/ElasticV7QueryChangesTest.java
+++ b/gerrit-elasticsearch/src/test/java/com/google/gerrit/elasticsearch/ElasticV7QueryChangesTest.java
@@ -41,7 +41,7 @@
       return;
     }
 
-    container = ElasticContainer.createAndStart(ElasticVersion.V7_3);
+    container = ElasticContainer.createAndStart(ElasticVersion.V7_4);
     nodeInfo = new ElasticNodeInfo(container.getHttpHost().getPort());
     client = HttpAsyncClients.createDefault();
     client.start();
diff --git a/gerrit-elasticsearch/src/test/java/com/google/gerrit/elasticsearch/ElasticV7QueryGroupsTest.java b/gerrit-elasticsearch/src/test/java/com/google/gerrit/elasticsearch/ElasticV7QueryGroupsTest.java
index 82f9abe..5c5b9f9 100644
--- a/gerrit-elasticsearch/src/test/java/com/google/gerrit/elasticsearch/ElasticV7QueryGroupsTest.java
+++ b/gerrit-elasticsearch/src/test/java/com/google/gerrit/elasticsearch/ElasticV7QueryGroupsTest.java
@@ -34,7 +34,7 @@
       return;
     }
 
-    container = ElasticContainer.createAndStart(ElasticVersion.V7_3);
+    container = ElasticContainer.createAndStart(ElasticVersion.V7_4);
     nodeInfo = new ElasticNodeInfo(container.getHttpHost().getPort());
   }
 
diff --git a/gerrit-elasticsearch/src/test/java/com/google/gerrit/elasticsearch/ElasticVersionTest.java b/gerrit-elasticsearch/src/test/java/com/google/gerrit/elasticsearch/ElasticVersionTest.java
index 707405b..8198ced 100644
--- a/gerrit-elasticsearch/src/test/java/com/google/gerrit/elasticsearch/ElasticVersionTest.java
+++ b/gerrit-elasticsearch/src/test/java/com/google/gerrit/elasticsearch/ElasticVersionTest.java
@@ -60,6 +60,9 @@
 
     assertThat(ElasticVersion.forVersion("7.3.0")).isEqualTo(ElasticVersion.V7_3);
     assertThat(ElasticVersion.forVersion("7.3.1")).isEqualTo(ElasticVersion.V7_3);
+
+    assertThat(ElasticVersion.forVersion("7.4.0")).isEqualTo(ElasticVersion.V7_4);
+    assertThat(ElasticVersion.forVersion("7.4.1")).isEqualTo(ElasticVersion.V7_4);
   }
 
   @Test
@@ -84,6 +87,7 @@
     assertThat(ElasticVersion.V7_1.isAtLeastMinorVersion(ElasticVersion.V6_7)).isFalse();
     assertThat(ElasticVersion.V7_2.isAtLeastMinorVersion(ElasticVersion.V6_7)).isFalse();
     assertThat(ElasticVersion.V7_3.isAtLeastMinorVersion(ElasticVersion.V6_7)).isFalse();
+    assertThat(ElasticVersion.V7_4.isAtLeastMinorVersion(ElasticVersion.V6_7)).isFalse();
   }
 
   @Test
@@ -100,6 +104,7 @@
     assertThat(ElasticVersion.V7_1.isV6OrLater()).isTrue();
     assertThat(ElasticVersion.V7_2.isV6OrLater()).isTrue();
     assertThat(ElasticVersion.V7_3.isV6OrLater()).isTrue();
+    assertThat(ElasticVersion.V7_4.isV6OrLater()).isTrue();
   }
 
   @Test
@@ -116,5 +121,6 @@
     assertThat(ElasticVersion.V7_1.isV7OrLater()).isTrue();
     assertThat(ElasticVersion.V7_2.isV7OrLater()).isTrue();
     assertThat(ElasticVersion.V7_3.isV7OrLater()).isTrue();
+    assertThat(ElasticVersion.V7_4.isV7OrLater()).isTrue();
   }
 }