TT#54803 Use grml-chroot instead of chroot for installing puppetlabs key

Otherwise there is an error:
  root@deb42 ~ # chroot /mnt apt-key adv --recv-keys --keyserver
  pool.sks-keyservers.net 6F6B15509CF8E59E6E469F327F438280EF8D349F
  Executing: /tmp/apt-key-gpghome.rXzEjIXDpX/gpg.1.sh --recv-keys
  --keyserver pool.sks-keyservers.net
  6F6B15509CF8E59E6E469F327F438280EF8D349F
  gpg: connecting dirmngr at '/tmp/apt-key-gpghome.rXzEjIXDpX/S.dirmngr'
  failed: IPC connect call failed
  gpg: keyserver receive failed: No dirmngr

Change-Id: Ib6c3e91b5fda335b788ecb4d1108bc4de45e9fba

templates/scripts/includes/deployment.sh

@@ -2099,7 +2099,7 @@ EOF
   PUPPET_GPG_KEY="6F6B15509CF8E59E6E469F327F438280EF8D349F"
 
   TRY=60
-  while ! chroot ${TARGET} apt-key adv --recv-keys --keyserver "${GPG_KEY_SERVER}" "${PUPPET_GPG_KEY}" ; do
+  while ! grml-chroot ${TARGET} apt-key adv --recv-keys --keyserver "${GPG_KEY_SERVER}" "${PUPPET_GPG_KEY}" ; do
     if [ ${TRY} -gt 0 ] ; then
       TRY=$((TRY-5))
       echo "Waiting for gpg keyserver '${GPG_KEY_SERVER}' availability ($TRY seconds)..."