Promote service exclusion and legacy node role to beta

We did not promote these to beta in 1.18 but will do so in 1.19.
As per the KEP we do not set disable LegacyNodeRoleBehavior to false
until 1.20.

Author: smarterclayton

pkg/features/kube_features.go

@@ -146,18 +146,21 @@ const (
 
 	// owner @smarterclayton
 	// alpha: v1.16
+	// beta:  v1.19
 	//
 	// Enable legacy behavior to vary cluster functionality on the node-role.kubernetes.io labels. On by default (legacy), will be turned off in 1.18.
 	LegacyNodeRoleBehavior featuregate.Feature = "LegacyNodeRoleBehavior"
 
 	// owner @brendandburns
 	// alpha: v1.9
+	// beta:  v1.19
 	//
 	// Enable nodes to exclude themselves from service load balancers
 	ServiceNodeExclusion featuregate.Feature = "ServiceNodeExclusion"
 
 	// owner @smarterclayton
 	// alpha: v1.16
+	// beta:  v1.19
 	//
 	// Enable nodes to exclude themselves from network disruption checks
 	NodeDisruptionExclusion featuregate.Feature = "NodeDisruptionExclusion"
@@ -597,8 +600,8 @@ var defaultKubernetesFeatureGates = map[featuregate.Feature]featuregate.FeatureS
 	CPUManager:                     {Default: true, PreRelease: featuregate.Beta},
 	CPUCFSQuotaPeriod:              {Default: false, PreRelease: featuregate.Alpha},
 	TopologyManager:                {Default: true, PreRelease: featuregate.Beta},
-	ServiceNodeExclusion:           {Default: false, PreRelease: featuregate.Alpha},
-	NodeDisruptionExclusion:        {Default: false, PreRelease: featuregate.Alpha},
+	ServiceNodeExclusion:           {Default: true, PreRelease: featuregate.Beta},
+	NodeDisruptionExclusion:        {Default: true, PreRelease: featuregate.Beta},
 	CSIDriverRegistry:              {Default: true, PreRelease: featuregate.GA, LockToDefault: true}, // remove in 1.20
 	CSINodeInfo:                    {Default: true, PreRelease: featuregate.GA, LockToDefault: true}, // remove in 1.19
 	BlockVolume:                    {Default: true, PreRelease: featuregate.GA, LockToDefault: true}, // remove in 1.20
@@ -674,5 +677,5 @@ var defaultKubernetesFeatureGates = map[featuregate.Feature]featuregate.FeatureS
 	// features that enable backwards compatibility but are scheduled to be removed
 	// ...
 	HPAScaleToZero:         {Default: false, PreRelease: featuregate.Alpha},
-	LegacyNodeRoleBehavior: {Default: true, PreRelease: featuregate.Alpha},
+	LegacyNodeRoleBehavior: {Default: true, PreRelease: featuregate.Beta},
 }