Add execute schema property.

Signed-off-by: Nathalie Jonathan <[email protected]>

Author: nathaliellenaa

spec/schemas/ml._common.yaml

@@ -1418,6 +1418,8 @@ components:
           $ref: '#/components/schemas/ModelStats'
         train_predict:
           $ref: '#/components/schemas/ModelStats'
+        execute:
+          $ref: '#/components/schemas/ModelStats'
     PredictRequestStats:
       type: object
       properties:
@@ -1560,6 +1562,8 @@ components:
           $ref: '#/components/schemas/ModelStats'
         train_predict:
           $ref: '#/components/schemas/ModelStats'
+        execute:
+          $ref: '#/components/schemas/ModelStats'
     ModelStats:
       type: object
       properties: