Rename feature gate files to use gate names

content/en/docs/reference/command-line-tools-reference/feature-gates/Accelerators.md

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+---
+# Removed from Kubernetes
+title: Accelerators
+content_type: feature_gate
+
+_build:
+  list: never
+  render: false
+
+stages:
+  - stage: alpha 
+    defaultValue: false
+    fromVersion: "1.6"
+    toVersion: "1.10"
+  - stage: deprecated
+    fromVersion: "1.11"
+    toVersion: "1.11"
+
+removed: true
+---
+Provided an early form of plugin to enable Nvidia GPU support when using
+Docker Engine; no longer available. See
+[Device Plugins](/docs/concepts/extend-kubernetes/compute-storage-net/device-plugins/) for
+an alternative.

content/en/docs/reference/command-line-tools-reference/feature-gates/AppArmor.md

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+---
+title: AppArmor
+content_type: feature_gate
+_build:
+  list: never
+  render: false
+
+stages:
+  - stage: beta
+    defaultValue: true
+    fromVersion: "1.4"
+    toVersion: "1.30"
+  - stage: stable
+    defaultValue: true
+    fromVersion: "1.31"
+---
+Enable use of AppArmor mandatory access control for Pods running on Linux nodes.
+See [AppArmor Tutorial](/docs/tutorials/security/apparmor/) for more details.

content/en/docs/reference/command-line-tools-reference/feature-gates/Initializers.md

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+---
+# Removed from Kubernetes
+title: Initializers
+content_type: feature_gate
+
+_build:
+  list: never
+  render: false
+
+stages:
+  - stage: alpha 
+    defaultValue: false
+    fromVersion: "1.7"
+    toVersion: "1.13"
+  - stage: deprecated
+    fromVersion: "1.14"
+    toVersion: "1.14"
+
+removed: true
+---
+Allow asynchronous coordination of object creation using the
+Initializers admission plugin.

content/en/docs/reference/command-line-tools-reference/feature-gates/KMSv1.md

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+---
+title: KMSv1
+content_type: feature_gate
+_build:
+  list: never
+  render: false
+
+stages:
+  - stage: deprecated
+    defaultValue: true
+    fromVersion: "1.28"  
+    toVersion: "1.28"
+  - stage: deprecated
+    defaultValue: false
+    fromVersion: "1.29"  
+
+---
+Enables KMS v1 API for encryption at rest. See [Using a KMS Provider for data encryption](/docs/tasks/administer-cluster/kms-provider) for more details.

content/en/docs/reference/command-line-tools-reference/feature-gates/KMSv2.md

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+---
+title: KMSv2
+content_type: feature_gate
+_build:
+  list: never
+  render: false
+
+stages:
+  - stage: alpha 
+    defaultValue: false
+    fromVersion: "1.25"
+    toVersion: "1.26"
+  - stage: beta
+    defaultValue: true
+    fromVersion: "1.27"  
+    toVersion: "1.28" 
+  - stage: stable
+    defaultValue: true
+    fromVersion: "1.29"
+    toVersion: "1.31"
+
+removed: true
+---
+Enables KMS v2 API for encryption at rest. See [Using a KMS Provider for data encryption](/docs/tasks/administer-cluster/kms-provider) for more details.

content/en/docs/reference/command-line-tools-reference/feature-gates/OpenAPIV3.md

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+---
+title: OpenAPIV3
+content_type: feature_gate
+_build:
+  list: never
+  render: false
+
+stages:
+  - stage: alpha 
+    defaultValue: false
+    fromVersion: "1.23"
+    toVersion: "1.23"
+  - stage: beta
+    defaultValue: true
+    fromVersion: "1.24"  
+    toVersion: "1.26" 
+  - stage: stable
+    defaultValue: true
+    fromVersion: "1.27"  
+    toVersion: "1.28" 
+removed: true
+---
+Enables the API server to publish OpenAPI v3.