Move etcd snapshot management CLI to request/response

Signed-off-by: Brad Davidson <brad.davidson@rancher.com>

go.mod

@@ -151,6 +151,7 @@ require (
 	k8s.io/api v0.29.3
 	k8s.io/apimachinery v0.29.3
 	k8s.io/apiserver v0.29.3
+	k8s.io/cli-runtime v0.22.2
 	k8s.io/client-go v11.0.1-0.20190409021438-1a26190bd76a+incompatible
 	k8s.io/cloud-provider v0.29.3
 	k8s.io/cluster-bootstrap v0.0.0
@@ -485,7 +486,6 @@ require (
 	gopkg.in/warnings.v0 v0.1.2 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 	k8s.io/apiextensions-apiserver v0.29.3 // indirect
-	k8s.io/cli-runtime v0.22.2 // indirect
 	k8s.io/code-generator v0.29.3 // indirect
 	k8s.io/controller-manager v0.25.4 // indirect
 	k8s.io/csi-translation-lib v0.0.0 // indirect

pkg/cli/cmds/etcd_snapshot.go

@@ -21,6 +21,14 @@ var EtcdSnapshotFlags = []cli.Flag{
 		Destination: &AgentConfig.NodeName,
 	},
 	DataDirFlag,
+	ServerToken,
+	&cli.StringFlag{
+		Name:        "server, s",
+		Usage:       "(cluster) Server to connect to",
+		EnvVar:      version.ProgramUpper + "_URL",
+		Value:       "https://127.0.0.1:6443",
+		Destination: &ServerConfig.ServerURL,
+	},
 	&cli.StringFlag{
 		Name:        "dir,etcd-snapshot-dir",
 		Usage:       "(db) Directory to save etcd on-demand snapshot. (default: ${data-dir}/db/snapshots)",