feat(k8s): change default runtime to containerd (#810)

BREAKING CHANGE: default runtime for k8s pool is now containerd instead of docker
Signed-off-by: Patrik Cyvoct <[email protected]>

Author: Sh4d1

scaleway/resource_k8s_pool.go

@@ -83,7 +83,7 @@ func resourceScalewayK8SPool() *schema.Resource {
 			"container_runtime": {
 				Type:        schema.TypeString,
 				Optional:    true,
-				Default:     k8s.RuntimeDocker.String(),
+				Default:     k8s.RuntimeContainerd.String(),
 				ForceNew:    true,
 				Description: "Container runtime for the pool",
 				ValidateFunc: validation.StringInSlice([]string{