[tests/checkintegrity] use the new connection api
* serverctl: the db-check command also uses an internal connection
object, which makes more sense in the context of `checkintegrity`.
* checkintegrity: rename srvcnx to just cnx (a bit because in the near
future, there will be one cnx to rule them all)
/var/log/cubicweb/*.log {
weekly
missingok
rotate 10
compress
delaycompress
notifempty
create 640 root adm
sharedscripts
postrotate
if [ -x /usr/sbin/invoke-rc.d ]; then \
invoke-rc.d cubicweb reload > /dev/null 2>&1; \
else \
/etc/init.d/cubicweb reload > /dev/null 2>&1; \
fi; \
endscript
}