Create composite indexes [ResourceType, ReferenceUUID, ReferenceType]

[IronPan]

It would improve the list runs call which contains filtering on [ResourceType, ReferenceUUID, ReferenceType]
We've seen cases list runs take long to run when resource_reference table is large.

SELECT
   subq.*,
   CONCAT("[", GROUP_CONCAT(r.Payload SEPARATOR ", "), "]") AS refs 
FROM
   (
      SELECT
         rd.*,
         CONCAT("[", GROUP_CONCAT(m.Payload SEPARATOR ", "), "]") AS metrics 
      FROM
         (
            SELECT
               UUID,
               DisplayName,
               Name,
               StorageState,
               Namespace,
               Description,
               CreatedAtInSec,
               ScheduledAtInSec,
               FinishedAtInSec,
               Conditions,
               PipelineId,
               PipelineSpecManifest,
               WorkflowSpecManifest,
               Parameters,
               pipelineRuntimeManifest,
               WorkflowRuntimeManifest 
            FROM
               run_details 
            WHERE
               UUID in 
               (
                  SELECT
                     ResourceUUID 
                  FROM
                     resource_references as rf 
                  WHERE
                     (
                        rf.ResourceType = 'Run' 
                        AND rf.ReferenceUUID = '488b0263-f4ee-4398-b7dc-768ffe967372' 
                        AND rf.ReferenceType = 'Experiment'
                     )
               )
               AND StorageState <> 'STORAGESTATE_ARCHIVED' 
            ORDER BY
               CreatedAtInSec DESC,
               UUID DESC LIMIT 6
         )
         AS rd 
         LEFT JOIN
            run_metrics AS m 
            ON rd.UUID = m.RunUUID 
      GROUP BY
         rd.UUID
   )
   AS subq 
   LEFT JOIN
      (
         select
            * 
         from
            resource_references 
         where
            ResourceType = 'Run'
      )
      AS r 
      ON subq.UUID = r.ResourceUUID 
GROUP BY
   subq.UUID 
ORDER BY
   CreatedAtInSec DESC,
   UUID DESC

/assign @hongye-sun

---

This change is 

[IronPan]

/test kubeflow-pipeline-sample-test

[hongye-sun]

/lgtm

[IronPan]

/test kubeflow-pipeline-sample-test

[IronPan]

/test kubeflow-pipeline-sample-test

[IronPan]

/approve

[k8s-ci-robot]

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[strangemonad-faire]

I don't believe this addresses the issue. I've opened #2071