Change default volume type to gp3

Author: RobertLucian

docs/clusters/management/create.md

@@ -36,7 +36,7 @@ node_groups:
     min_instances: 1 # minimum number of instances
     max_instances: 5 # maximum number of instances
     instance_volume_size: 50 # disk storage size per instance (GB)
-    instance_volume_type: gp2 # instance volume type [gp2 | io1 | st1 | sc1]
+    instance_volume_type: gp3 # instance volume type [gp2 | gp3 | io1 | st1 | sc1]
     # instance_volume_iops: 3000 # instance volume iops (only applicable to io1)
     spot: false # whether to use spot instances
 
@@ -45,7 +45,7 @@ node_groups:
     min_instances: 1
     max_instances: 5
     instance_volume_size: 50
-    instance_volume_type: gp2
+    instance_volume_type: gp3
     # instance_volume_iops: 3000
     spot: false
   ...

pkg/types/clusterconfig/cluster_config.go

@@ -478,7 +478,7 @@ var ManagedConfigStructFieldValidations = []*cr.StructFieldValidation{
 						StructField: "InstanceVolumeType",
 						StringValidation: &cr.StringValidation{
 							AllowedValues: VolumeTypesStrings(),
-							Default:       GP2VolumeType.String(),
+							Default:       GP3VolumeType.String(),
 						},
 						Parser: func(str string) (interface{}, error) {
 							return VolumeTypeFromString(str), nil

pkg/types/clusterconfig/volume_types.go

@@ -21,6 +21,7 @@ type VolumeType int
 const (
 	UnknownVolumeType VolumeType = iota
 	GP2VolumeType
+	GP3VolumeType
 	IO1VolumeType
 	SC1VolumeType
 	ST1VolumeType
@@ -29,6 +30,7 @@ const (
 var _availableVolumeTypes = []string{
 	"unknown",
 	"gp2",
+	"gp3",
 	"io1",
 	"sc1",
 	"st1",