[#538]Add device_type function and warning messages #1608

Job	Run time
atorch-pre-commit	4m 24s
brain-test	2m 27s
atorch-python-test	6m 43s
dlrover-client-test	2m 41s
dlrover-python-test	3m 19s
dlrover-system-test-criteo-deeprec	3m 22s
dlrover-system-test-deepfm	3m 18s
dlrover-system-test-tf2	2m 7s
dlrover-trainer-test	2m 17s
operator-test	2m 24s
pre-commit	2m 2s
tfplus-pre-commit	53s
tfplus-python-test	1m 4s
	37m 1s

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