Regenerate client from commit e4b1338 of spec repo (#581)

Co-authored-by: ci.datadog-api-spec <[email protected]>
Co-authored-by: api-clients-generation-pipeline[bot] <54105614+api-clients-generation-pipeline[bot]@users.noreply.github.com>

Author: api-clients-generation-pipeline[bot]

.apigentools-info

@@ -4,13 +4,13 @@
     "spec_versions": {
         "v1": {
             "apigentools_version": "1.5.1.dev2",
-            "regenerated": "2021-09-14 11:06:15.810526",
-            "spec_repo_commit": "b1c1fe4"
+            "regenerated": "2021-09-14 13:19:14.345891",
+            "spec_repo_commit": "e4b1338"
         },
         "v2": {
             "apigentools_version": "1.5.1.dev2",
-            "regenerated": "2021-09-14 11:06:39.970984",
-            "spec_repo_commit": "b1c1fe4"
+            "regenerated": "2021-09-14 13:19:39.383556",
+            "spec_repo_commit": "e4b1338"
         }
     }
 }