feat: add support for 'eus' channelGroupType in ROSA provider

Author: andreadecorte

config/crd/bases/controlplane.cluster.x-k8s.io_rosacontrolplanes.yaml

@@ -87,6 +87,7 @@ spec:
                 description: OpenShift version channel group, default is stable.
                 enum:
                 - stable
+                - eus
                 - fast
                 - candidate
                 - nightly

controlplane/rosa/api/v1beta2/rosacontrolplane_types.go

@@ -59,6 +59,9 @@ const (
 	// Stable channel group is the default channel group for stable releases.
 	Stable ChannelGroupType = "stable"
 
+	// Eus channel group is for eus channel releases.
+	Eus ChannelGroupType = "eus"
+
 	// Fast channel group is for fast channel releases.
 	Fast ChannelGroupType = "fast"
 
@@ -110,7 +113,7 @@ type RosaControlPlaneSpec struct { //nolint: maligned
 
 	// OpenShift version channel group, default is stable.
 	//
-	// +kubebuilder:validation:Enum=stable;fast;candidate;nightly
+	// +kubebuilder:validation:Enum=stable;eus;fast;candidate;nightly
 	// +kubebuilder:default=stable
 	ChannelGroup ChannelGroupType `json:"channelGroup"`
 

docs/book/src/topics/rosa/upgrades.md

@@ -11,7 +11,7 @@ When the versionGate is set to 'Acknowledge', it will revert to 'WaitForAcknowle
 
 The available upgrades versions for the `ROSAControlPlane` will be listed under `ROSAControlPlane.status.availableUpgrades`
 
-The version channel group `ROSAControlPlane.spec.channelGroup` default to stable. However, it can be set to fast, candidate, or nightly. Changing the version channel group will change the `ROSAControlPlane.status.availableUpgrades` accordingly. Note that the use of channel groups other than stable may require additional permissions.
+The version channel group `ROSAControlPlane.spec.channelGroup` defaults to stable. However, it can be set to eus, fast, candidate, or nightly. Changing the version channel group will change the `ROSAControlPlane.status.availableUpgrades` accordingly. Note that the use of channel groups other than stable may require additional permissions.
 
 The Upgrade state can be checked in the conditions under `ROSAControlPlane.status`.