Use yaml files from a particular tag, not from master

[aledbf]

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[k8s-ci-robot]

@aledbf: The following test failed, say /retest to rerun them all:

Test name	Commit	Details	Rerun command
pull-ingress-nginx-e2e-1-15	bcc7d98	link	/test pull-ingress-nginx-e2e-1-15

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