Support TLS certificate generation in make-etcd

docker/etc/systemd/system/vitastor-etcd.service

@@ -12,12 +12,7 @@ EnvironmentFile=/etc/vitastor/etcd.conf
 SyslogIdentifier=etcd
 ExecStart=bash -c 'docker run --rm -i -v /var/lib/vitastor/etcd:/data \
     --log-driver none --network host $CONTAINER_OPTIONS --name vitastor-etcd \
-    $ETCD_IMAGE /usr/local/bin/etcd --name "$ETCD_NAME" --data-dir /data \
-    --snapshot-count 10000 --advertise-client-urls http://$ETCD_IP:2379 --listen-client-urls http://$ETCD_IP:2379 \
-    --initial-advertise-peer-urls http://$ETCD_IP:2380 --listen-peer-urls http://$ETCD_IP:2380 \
-    --initial-cluster-token vitastor-etcd-1 --initial-cluster "$ETCD_INITIAL_CLUSTER" \
-    --initial-cluster-state new --max-txn-ops=100000 --max-request-bytes=104857600 \
-    --auto-compaction-retention=10 --auto-compaction-mode=revision'
+    $ETCD_IMAGE /usr/local/bin/etcd --data-dir /data
 ExecStop=docker stop vitastor-etcd
 Restart=always
 StartLimitInterval=0

docker/etc/vitastor/etcd.conf

@@ -1,4 +1 @@
 ETCD_IMAGE=quay.io/coreos/etcd:v3.5.18
-ETCD_NAME=""
-ETCD_IP=""
-ETCD_INITIAL_CLUSTER=""