Automated cherry pick of #6835: Add ap-east-1 zones infer #6821: update tolerations #6859: Protect against nil derefence #6929
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Cherry pick of #6835 #6821 #6859 on release-1.13.
#6835: Add ap-east-1 zones infer
#6821: update tolerations
#6859: Protect against nil derefence