Fix known issue of 'diagnosis_agent'. #4506

Job	Run time
dlrover-python-test	7m 43s
dlrover-python-test	7m 31s
dlrover-system-test-criteo-deeprec	2m 50s
dlrover-system-test-criteo-deeprec	2m 50s
brain-test	1m 34s
brain-test	1m 34s
dlrover-system-test-deepfm	2m 36s
dlrover-system-test-deepfm	2m 36s
dlrover-system-test-tf2	1m 20s
dlrover-system-test-tf2	1m 20s
operator-test	1m 26s
operator-test	1m 26s
pre-commit	1m 9s
pre-commit	1m 9s
	37m 4s

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