[TEST] Mute index synced flush rest tests

Awaiting fix of #29162

rest-api-spec/src/main/resources/rest-api-spec/test/cat.shards/10_basic.yml

@@ -80,6 +80,10 @@
                $/
 ---
 "Test cat shards output":
+  - skip:
+      # The BWC logic for released 6.0 and 6.1 versions is wrong
+      version: "all"
+      reason:  "AwaitsFix'ing, see elasticsearch #29162"
 
   - do:
       cat.shards: {}

rest-api-spec/src/main/resources/rest-api-spec/test/indices.flush/10_basic.yml

@@ -1,5 +1,10 @@
 ---
 "Index synced flush rest test":
+    - skip:
+        # The BWC logic for released 6.0 and 6.1 versions is wrong
+        version: "all"
+        reason:  "AwaitsFix'ing, see elasticsearch #29162"
+
     - do:
        indices.create:
           index: testing