Merge pull request #103061 from SergeyKanzhelev/removeAlphaRuntimeClass

Remove RuntimeClass feature gate and stop serving older versions of RuntimeClass

api/openapi-spec/v3/api__v1_openapi.json

@@ -4339,7 +4339,7 @@
             "type": "string"
           },
           "runtimeClassName": {
-            "description": "RuntimeClassName refers to a RuntimeClass object in the node.k8s.io group, which should be used to run this pod.  If no RuntimeClass resource matches the named class, the pod will not be run. If unset or empty, the \"legacy\" RuntimeClass will be used, which is an implicit class with an empty definition that uses the default runtime handler. More info: https://git.k8s.io/enhancements/keps/sig-node/585-runtime-class This is a beta feature as of Kubernetes v1.14.",
+            "description": "RuntimeClassName refers to a RuntimeClass object in the node.k8s.io group, which should be used to run this pod.  If no RuntimeClass resource matches the named class, the pod will not be run. If unset or empty, the \"legacy\" RuntimeClass will be used, which is an implicit class with an empty definition that uses the default runtime handler. More info: https://git.k8s.io/enhancements/keps/sig-node/585-runtime-class",
             "type": "string"
           },
           "schedulerName": {

api/openapi-spec/v3/apis__apps__v1_openapi.json

@@ -3029,7 +3029,7 @@
             "type": "string"
           },
           "runtimeClassName": {
-            "description": "RuntimeClassName refers to a RuntimeClass object in the node.k8s.io group, which should be used to run this pod.  If no RuntimeClass resource matches the named class, the pod will not be run. If unset or empty, the \"legacy\" RuntimeClass will be used, which is an implicit class with an empty definition that uses the default runtime handler. More info: https://git.k8s.io/enhancements/keps/sig-node/585-runtime-class This is a beta feature as of Kubernetes v1.14.",
+            "description": "RuntimeClassName refers to a RuntimeClass object in the node.k8s.io group, which should be used to run this pod.  If no RuntimeClass resource matches the named class, the pod will not be run. If unset or empty, the \"legacy\" RuntimeClass will be used, which is an implicit class with an empty definition that uses the default runtime handler. More info: https://git.k8s.io/enhancements/keps/sig-node/585-runtime-class",
             "type": "string"
           },
           "schedulerName": {

api/openapi-spec/v3/apis__batch__v1_openapi.json

@@ -2255,7 +2255,7 @@
             "type": "string"
           },
           "runtimeClassName": {
-            "description": "RuntimeClassName refers to a RuntimeClass object in the node.k8s.io group, which should be used to run this pod.  If no RuntimeClass resource matches the named class, the pod will not be run. If unset or empty, the \"legacy\" RuntimeClass will be used, which is an implicit class with an empty definition that uses the default runtime handler. More info: https://git.k8s.io/enhancements/keps/sig-node/585-runtime-class This is a beta feature as of Kubernetes v1.14.",
+            "description": "RuntimeClassName refers to a RuntimeClass object in the node.k8s.io group, which should be used to run this pod.  If no RuntimeClass resource matches the named class, the pod will not be run. If unset or empty, the \"legacy\" RuntimeClass will be used, which is an implicit class with an empty definition that uses the default runtime handler. More info: https://git.k8s.io/enhancements/keps/sig-node/585-runtime-class",
             "type": "string"
           },
           "schedulerName": {

api/openapi-spec/v3/apis__batch__v1beta1_openapi.json

@@ -2057,7 +2057,7 @@
             "type": "string"
           },
           "runtimeClassName": {
-            "description": "RuntimeClassName refers to a RuntimeClass object in the node.k8s.io group, which should be used to run this pod.  If no RuntimeClass resource matches the named class, the pod will not be run. If unset or empty, the \"legacy\" RuntimeClass will be used, which is an implicit class with an empty definition that uses the default runtime handler. More info: https://git.k8s.io/enhancements/keps/sig-node/585-runtime-class This is a beta feature as of Kubernetes v1.14.",
+            "description": "RuntimeClassName refers to a RuntimeClass object in the node.k8s.io group, which should be used to run this pod.  If no RuntimeClass resource matches the named class, the pod will not be run. If unset or empty, the \"legacy\" RuntimeClass will be used, which is an implicit class with an empty definition that uses the default runtime handler. More info: https://git.k8s.io/enhancements/keps/sig-node/585-runtime-class",
             "type": "string"
           },
           "schedulerName": {