Flooding warnings in tide: BranchProtectionWarnings

[chaodaiG]

What happened:

Tide runs every minute, it emits the same warning every time it runs:

jsonPayload: {
func: "k8s.io/test-infra/prow/config.(*Config).BranchProtectionWarnings"
file: "prow/config/branch_protection.go:451"
component: "tide"
msg: "The following repos define a policy or require context(s), but have one or more branches with protect: false"
controller: "sync"
level: "warning"
repos: "kubernetes-sigs/aws-ebs-csi-driver=gh-pages,kubernetes-sigs/aws-efs-csi-driver=gh-pages,kubernetes-sigs/aws-fsx-csi-driver=gh-pages,kubernetes-sigs/nfs-subdir-external-provisioner=gh-pages,kubernetes-sigs/node-feature-discovery-operator=gh-pages,kubernetes-sigs/node-feature-discovery=gh-pages,kubernetes/cloud-provider-aws=gh-pages,kubernetes/cloud-provider-openstack=gh-pages,kubernetes/ingress-nginx=gh-pages,kubernetes/kube-state-metrics=gh-pages"
}

What you expected to happen:

This is not an actionable warning for prow operator, doesn't make much sense alert every minute.

[chaodaiG]

/area prow

[chaodaiG]

For example in #20157, it's intended not to protect aws-ebs-csi-driver gh-pages branch

[spiffxp]

/sig testing
/milestone v1.22