Support for ppc64le

[zoyun]

fix the problem for support power ppc64le

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This change is 

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[k8s-ci-robot]

Hi @zoyun. Thanks for your PR.

I'm waiting for a kubeflow member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[jinchihe]

@zoyun pls assign CLA as above informaton.

/ok-to-test

[zoyun]

/retest

[zoyun]

@googlebot I signed it!

[googlebot]

CLAs look good, thanks!

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[gaocegege]

/assign @richardsliu

[gaocegege]

@zoyun Can you rebase when #1072 is merged? I am not sure if there is any conflict

[zoyun]

@gaocegege I just changed util.py, seems it does not conflict with #1072.

[gaocegege]

After confirmation, LGTM

/lgtm
/approve

Thanks for your contribution! 🎉 👍

[k8s-ci-robot]

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