Resolve L2SS-1838 "Redeploy after reboot"

Closes L2SS-1838

infra/station/nomad/station-control.service

+[Unit]
+Description=station-control
+After=nomad.service docker.service
+
+[Service]
+Type=oneshot
+RemainAfterExit=yes
+ExecStart=/usr/bin/nomad node eligibility -self -enable
+ExecStop=/usr/bin/nomad node drain -self -enable -deadline "30s" -detach -yes
+User=nomad
+Group=nomad
+
+[Install]
+WantedBy=multi-user.target