[dataimport] remove drop_index parameter from massive store
"drop_index=False" also implied not dropping any constraints, in
particular foreign keys, which meant any attempt to import entities
would fail, because we only add metadata (the entities table) after the
entity's insertion.
/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
}