fix issue#35, update ort to v2 #393

Job	Run time
ubuntu-build (ubuntu-20.04, 11)	7m 40s
ubuntu-build (ubuntu-20.04, 11)	7m 40s
ubuntu-build (ubuntu-20.04, 12)	7m 29s
ubuntu-build (ubuntu-20.04, 12)	7m 29s
ubuntu-build (ubuntu-20.04, 13)	7m 11s
ubuntu-build (ubuntu-20.04, 13)	7m 11s
ubuntu-build (ubuntu-20.04, 14)	7m 23s
ubuntu-build (ubuntu-20.04, 14)	7m 23s
ubuntu-build (ubuntu-20.04, 15)	11m 41s
ubuntu-build (ubuntu-20.04, 15)	11m 41s
ubuntu-build (ubuntu-20.04, 16)	7m 13s
ubuntu-build (ubuntu-20.04, 16)	7m 13s
ubuntu-build (ubicloud-standard-4-arm, 11)	11m 6s
ubuntu-build (ubicloud-standard-4-arm, 11)	11m 6s
ubuntu-build (ubicloud-standard-4-arm, 12)	11m 1s
ubuntu-build (ubicloud-standard-4-arm, 12)	11m 1s
ubuntu-build (ubicloud-standard-4-arm, 13)	11m 3s
ubuntu-build (ubicloud-standard-4-arm, 13)	11m 3s
ubuntu-build (ubicloud-standard-4-arm, 14)	11m 24s
ubuntu-build (ubicloud-standard-4-arm, 14)	11m 24s
ubuntu-build (ubicloud-standard-4-arm, 15)	20m 20s
ubuntu-build (ubicloud-standard-4-arm, 15)	20m 20s
ubuntu-build (ubicloud-standard-4-arm, 16)	11m 43s
ubuntu-build (ubicloud-standard-4-arm, 16)	11m 43s
ubuntu-package	9s
ubuntu-package	6s
	4h 10m 43s

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