change template name to purge_data

debian/gitlab.templates

@@ -58,7 +58,7 @@ _Description: Use Let's Encrypt?
  certificates must be renewed manually after 3 months, when current
  letsencrypt certificate expire.
 
-Template: gitlab/purge
+Template: gitlab/purge_data
 Type: boolean
 Default: true 
 _Description: Remove all data?

debian/postrm

@@ -52,11 +52,11 @@ case "$1" in
       . /usr/share/debconf/confmodule
 
       # Do you want to remove all data?
-      db_input high gitlab/purge || true
+      db_input high gitlab/purge_data || true
       db_go
       
       # Check if we should remove data?
-      db_get gitlab/purge
+      db_get gitlab/purge_data
       if [ "${RET}" = "true" ]; then
         if [ -d ${gitlab_data_dir} ]; then
           for i in shared public db repositories secrets.yml Gemfile.lock; do