Merge pull request #51300 from caesarxuchao/remove-failure-policy

Automatic merge from submit-queue (batch tested with PRs 50919, 51410, 50099, 51300, 50296)

Remove failure policy from initializer configuration

A few reasons:
* Implementing fail open initializers increases complexity a lot
* We haven't seen strong use cases
* We can always add it back

api/openapi-spec/swagger.json

@@ -54660,10 +54660,6 @@
      "name"
     ],
     "properties": {
-     "failurePolicy": {
-      "description": "FailurePolicy defines what happens if the responsible initializer controller fails to takes action. Allowed values are Ignore, or Fail. If \"Ignore\" is set, initializer is removed from the initializers list of an object if the timeout is reached; If \"Fail\" is set, admissionregistration returns timeout error if the timeout is reached.",
-      "type": "string"
-     },
      "name": {
       "description": "Name is the identifier of the initializer. It will be added to the object that needs to be initialized. Name should be fully qualified, e.g., alwayspullimages.kubernetes.io, where \"alwayspullimages\" is the name of the webhook, and kubernetes.io is the name of the organization. Required",
       "type": "string"

api/swagger-spec/admissionregistration.k8s.io_v1alpha1.json

@@ -1814,10 +1814,6 @@
        "$ref": "v1alpha1.Rule"
       },
       "description": "Rules describes what resources/subresources the initializer cares about. The initializer cares about an operation if it matches _any_ Rule. Rule.Resources must not include subresources."
-     },
-     "failurePolicy": {
-      "$ref": "v1alpha1.FailurePolicyType",
-      "description": "FailurePolicy defines what happens if the responsible initializer controller fails to takes action. Allowed values are Ignore, or Fail. If \"Ignore\" is set, initializer is removed from the initializers list of an object if the timeout is reached; If \"Fail\" is set, admissionregistration returns timeout error if the timeout is reached."
      }
     }
    },