[migration] stop caching the mapping from constraint type name to eid
It's not so frequent that a cache seems necessary, and we were not
invalidating that cache when adding a new constraint type.
Related to #3724892.
#! /bin/sh -e
if [ -x "/etc/init.d/cubicweb-ctl" ]; then
invoke-rc.d cubicweb-ctl restart || true
fi
#DEBHELPER#
exit 0