KEP-1880: don't lock ServiceCIDR by default #5001
Merged
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One-line PR description: Graduate to GA KEP-1880 but don't lock it by default
Issue link: Multiple Service CIDRs #1880
Other comments: This change requires an action item on infrastructure providers or components that depend on the convention that the Service CIDR on the cluster was unique and immutables, also, the restriction of disabling beta APIs by default made that the signal is still low for a complex feature of this magnitude.
Not setting the feature gate locked by default allow infrastructure providers and users to still disable the feature gate without having to install webhooks or Validating Admission Policies.