Adjust BWC version for dynamic templates in bulk requests (#71537)

Relates #69948

Author: dnhatn

build.gradle

@@ -189,9 +189,9 @@ tasks.register("verifyVersions") {
  * after the backport of the backcompat code is complete.
  */
 
-boolean bwc_tests_enabled = false
+boolean bwc_tests_enabled = true
 // place a PR link here when committing bwc changes:
-String bwc_tests_disabled_issue = "https://github.com/elastic/elasticsearch/pull/69948"
+String bwc_tests_disabled_issue = ""
 /*
  * FIPS 140-2 behavior was fixed in 7.11.0. Before that there is no way to run elasticsearch in a
  * JVM that is properly configured to be in fips mode with BCFIPS. For now we need to disable

rest-api-spec/src/yamlRestTest/resources/rest-api-spec/test/bulk/11_dynamic_templates.yml

@@ -1,8 +1,8 @@
 ---
 "Dynamic templates":
   - skip:
-      version: " - 7.99.99"
-      reason: "Dynamic templates parameter is added to bulk requests in 8.0"
+      version: " - 7.12.99"
+      reason: "Dynamic templates parameter is added to bulk requests in 7.13"
 
   - do:
       indices.create:

server/src/main/java/org/elasticsearch/action/index/IndexRequest.java

@@ -148,7 +148,7 @@ public IndexRequest(@Nullable ShardId shardId, StreamInput in) throws IOExceptio
         } else {
             requireAlias = false;
         }
-        if (in.getVersion().onOrAfter(Version.V_8_0_0)) {
+        if (in.getVersion().onOrAfter(Version.V_7_13_0)) {
             dynamicTemplates = in.readMap(StreamInput::readString, StreamInput::readString);
         }
     }
@@ -660,11 +660,11 @@ private void writeBody(StreamOutput out) throws IOException {
         if (out.getVersion().onOrAfter(Version.V_7_10_0)) {
             out.writeBoolean(requireAlias);
         }
-        if (out.getVersion().onOrAfter(Version.V_8_0_0)) {
+        if (out.getVersion().onOrAfter(Version.V_7_13_0)) {
             out.writeMap(dynamicTemplates, StreamOutput::writeString, StreamOutput::writeString);
         } else {
             if (dynamicTemplates.isEmpty() == false) {
-                throw new IllegalArgumentException("[dynamic_templates] parameter requires all nodes on " + Version.V_8_0_0 + " or later");
+                throw new IllegalArgumentException("[dynamic_templates] parameter requires all nodes on " + Version.V_7_13_0 + " or later");
             }
         }
     }

server/src/test/java/org/elasticsearch/action/index/IndexRequestTests.java

@@ -206,19 +206,19 @@ public void testSerializeDynamicTemplates() throws Exception {
             Map<String, String> dynamicTemplates = IntStream.range(0, randomIntBetween(1, 10))
                 .boxed().collect(Collectors.toMap(n -> "field-" + n, n -> "name-" + n));
             indexRequest.setDynamicTemplates(dynamicTemplates);
-            Version ver = VersionUtils.randomVersionBetween(random(), Version.V_7_0_0, VersionUtils.getPreviousVersion(Version.V_8_0_0));
+            Version ver = VersionUtils.randomVersionBetween(random(), Version.V_7_0_0, VersionUtils.getPreviousVersion(Version.V_7_13_0));
             BytesStreamOutput out = new BytesStreamOutput();
             out.setVersion(ver);
             IllegalArgumentException error = expectThrows(IllegalArgumentException.class, () -> indexRequest.writeTo(out));
             assertThat(error.getMessage(),
-                equalTo("[dynamic_templates] parameter requires all nodes on " + Version.V_8_0_0 + " or later"));
+                equalTo("[dynamic_templates] parameter requires all nodes on " + Version.V_7_13_0 + " or later"));
         }
         // new version
         {
             Map<String, String> dynamicTemplates = IntStream.range(0, randomIntBetween(0, 10))
                 .boxed().collect(Collectors.toMap(n -> "field-" + n, n -> "name-" + n));
             indexRequest.setDynamicTemplates(dynamicTemplates);
-            Version ver = VersionUtils.randomVersionBetween(random(), Version.V_8_0_0, Version.CURRENT);
+            Version ver = VersionUtils.randomVersionBetween(random(), Version.V_7_13_0, Version.CURRENT);
             BytesStreamOutput out = new BytesStreamOutput();
             out.setVersion(ver);
             indexRequest.writeTo(out);