[fix] wait for admin user to be available after a slapd regen-conf, this fix install on slow hardware/vps

data/hooks/conf_regen/06-slapd

@@ -102,6 +102,23 @@ do_post_regen() {
   fi
 
   sudo service slapd force-reload
+
+  # on slow hardware/vm this regen conf would exit before the admin user that
+  # is stored in ldap is available because ldap seems to slow to restart
+  # so we'll wait either until we are able to log as admin or until a timeout
+  # is reached
+  # we need to do this because the next hooks executed after this one during
+  # postinstall requires to run as admin thus breaking postinstall on slow
+  # hardware which mean yunohost can't be correctly installed on those hardware
+  # and this sucks
+  # wait a maximum time of 5 minutes
+  # yes, force-reload behave like a restart
+  number_of_wait=0
+  while ! sudo su admin -c '' && ((number_of_wait < 60))
+  do
+      sleep 5
+      ((number_of_wait += 1))
+  done
 }
 
 FORCE=${2:-0}