init: create kubeconfig file with unique user/cluster name (#1133)

* Generate kubeconfig with unique name

* Move create name flag to config

* Add name validation to config

* Move name flag in e2e tests to config generation

* Remove name flag from create

* Update ascii cinema flow

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Signed-off-by: Daniel Weiße <dw@edgeless.systems>

cli/internal/cmd/cloud.go

@@ -21,7 +21,7 @@ type cloudCreator interface {
 		ctx context.Context,
 		provider cloudprovider.Provider,
 		config *config.Config,
-		name, insType string,
+		insType string,
 		coordCount, nodeCount int,
 	) (clusterid.File, error)
 }