Temporarily commenting out a test in migrate/20_reindex_status (elastic#118879)

We are changing the format of an unreleased API in elastic#118803. This causes
yamlRestCompatTest to fail. This PR is commenting out the failed test
for now. Once elastic#118803 goes in, I'll backport the change and reenable
this test (with the new structure).

Author: masseyke

x-pack/plugin/src/yamlRestTest/resources/rest-api-spec/test/migrate/20_reindex_status.yml

@@ -18,67 +18,67 @@ setup:
       migrate.get_reindex_status:
         index: "does_not_exist"
 
----
-"Test Reindex With Existing Data Stream":
-  - requires:
-      reason: "migration reindex is behind a feature flag"
-      test_runner_features: [capabilities]
-      capabilities:
-        - method: POST
-          path: /_migration/reindex
-          capabilities: [migration_reindex]
-  - do:
-      indices.put_index_template:
-        name: my-template1
-        body:
-          index_patterns: [my-data-stream*]
-          template:
-            mappings:
-              properties:
-                '@timestamp':
-                  type: date
-                'foo':
-                  type: keyword
-          data_stream: {}
-
-  - do: # superuser
-      indices.create_data_stream:
-        name: my-data-stream
-  - is_true: acknowledged
-
-  - do:
-      migrate.reindex:
-        body: |
-          {
-            "mode": "upgrade",
-            "source": {
-              "index": "my-data-stream"
-            }
-          }
-  - match: { acknowledged: true }
-
-  - do:
-      migrate.get_reindex_status:
-        index: "my-data-stream"
-  - match: { complete: true }
-  - match: { total_indices: 1 }
-  - match: { total_indices_requiring_upgrade: 0 }
-  - match: { successes: 0 }
-  - match: { in_progress: 0 }
-  - match: { pending: 0 }
-  - match: { errors: [] }
-
-  - do:
-      migrate.cancel_reindex:
-        index: "my-data-stream"
-  - match: { acknowledged: true }
-
-  - do:
-      catch: /resource_not_found_exception/
-      migrate.cancel_reindex:
-        index: "my-data-stream"
-
-  - do:
-      catch: /resource_not_found_exception/
-      migrate.get_reindex_status:
-        index: "my-data-stream"
+#---
+#"Test Reindex With Existing Data Stream":
+#  - requires:
+#      reason: "migration reindex is behind a feature flag"
+#      test_runner_features: [capabilities]
+#      capabilities:
+#        - method: POST
+#          path: /_migration/reindex
+#          capabilities: [migration_reindex]
+#  - do:
+#      indices.put_index_template:
+#        name: my-template1
+#        body:
+#          index_patterns: [my-data-stream*]
+#          template:
+#            mappings:
+#              properties:
+#                '@timestamp':
+#                  type: date
+#                'foo':
+#                  type: keyword
+#          data_stream: {}
+#
+#  - do: # superuser
+#      indices.create_data_stream:
+#        name: my-data-stream
+#  - is_true: acknowledged
+#
+#  - do:
+#      migrate.reindex:
+#        body: |
+#          {
+#            "mode": "upgrade",
+#            "source": {
+#              "index": "my-data-stream"
+#            }
+#          }
+#  - match: { acknowledged: true }
+#
+#  - do:
+#      migrate.get_reindex_status:
+#        index: "my-data-stream"
+#  - match: { complete: true }
+#  - match: { total_indices: 1 }
+#  - match: { total_indices_requiring_upgrade: 0 }
+#  - match: { successes: 0 }
+#  - match: { in_progress: 0 }
+#  - match: { pending: 0 }
+#  - match: { errors: [] }
+#
+#  - do:
+#      migrate.cancel_reindex:
+#        index: "my-data-stream"
+#  - match: { acknowledged: true }
+#
+#  - do:
+#      catch: /resource_not_found_exception/
+#      migrate.cancel_reindex:
+#        index: "my-data-stream"
+#
+#  - do:
+#      catch: /resource_not_found_exception/
+#      migrate.get_reindex_status:
+#        index: "my-data-stream"