Revert hostname truncation

.gitlab/ci_scripts/create_vps.sh

@@ -2,10 +2,6 @@
 # Check if cluster directory was available from cache
 set -v
 
-# Shorten the hostname to work around a bug in cosmos, which fails to create a
-# working VPS if the the hostname is too long.
-HOSTNAME=$(expr substr "${HOSTNAME}" 1 40)
-
 if [ -d clusters/$HOSTNAME/secrets ]
 then
   ip_address=$(python -m openappstack ${HOSTNAME} info --ip-address)