* Removes discovery v1alpha1 API
* Replaces per Endpoint Topology with a read only DeprecatedTopology
in GA API
* Adds per Endpoint Zone field in GA API
- Remove feature gate consideration from EndpointSlice validation
- Deprecate topology field, note that it will be removed in future
release
- Update kube-proxy to check for NodeName if feature gate is enabled
- Add comments indicating the feature gates that can be used to enable
alpha API fields
- Add comments explaining use of deprecated address type in tests
In addition to adding NodeName, this notes that the topology field will
be deprecated soon. It also removes the IP address type that was
deprecated in Kubernetes 1.17 and intended to be removed in 1.20.
This updates EndpointSlice port validation to mirror the validation
already in use for Service and Endpoint ports. This is required to
ensure all valid Service ports can be mapped directly to EndpointSlice
ports.
This should fix a bug that could break masters when the EndpointSlice
feature gate was enabled. This was all tied to how the apiserver creates
and manages it's own services and endpoints (or in this case endpoint
slices). Consumers of endpoint slices also need to know about the
corresponding service. Previously we were trying to set an owner
reference here for this purpose, but that came with potential downsides
and increased complexity. This commit changes behavior of the apiserver
endpointslice integration to set the service name label instead of owner
references, and simplifies consumer logic to reference that (both are
set by the EndpointSlice controller).
Additionally, this should fix a bug with the EndpointSlice GenerateName
value that had previously been set with a "." as a suffix.
