Allow cluster to start after power off when ETCD_DISABLE_PRESTOP is set

Signed-off-by: Brad Klein <bklein@cray.com>

bitnami/etcd/3.5/debian-11/rootfs/opt/bitnami/scripts/libetcd.sh

@@ -664,6 +664,13 @@ etcd_initialize() {
             if is_boolean_yes "$ETCD_DISABLE_PRESTOP"; then
                 info "The member will try to join the cluster by it's own"
                 export ETCD_INITIAL_CLUSTER_STATE=existing
+                #
+                # If we're configured with ETCD_DISABLE_PRESTOP - we aren't
+                # dynamically adjusting membership. We'll return here in
+                # this case and let etcd start and join the statically configured
+                # cluster.
+                #
+                return 0
             fi
             member_id="$(get_member_id)"
             if ! is_healthy_etcd_cluster; then