Regenerate client from commit b6b538d of spec repo

Author: ci.datadog-api-spec

.apigentools-info

@@ -4,13 +4,13 @@
     "spec_versions": {
         "v1": {
             "apigentools_version": "1.5.1.dev2",
-            "regenerated": "2021-10-01 10:29:48.528953",
-            "spec_repo_commit": "bc91052"
+            "regenerated": "2021-10-05 07:14:07.138346",
+            "spec_repo_commit": "b6b538d"
         },
         "v2": {
             "apigentools_version": "1.5.1.dev2",
-            "regenerated": "2021-10-01 10:30:25.939548",
-            "spec_repo_commit": "bc91052"
+            "regenerated": "2021-10-05 07:14:39.920759",
+            "spec_repo_commit": "b6b538d"
         }
     }
 }