Test if cscli is installed if so run hub update and reload (#1827)

config/crowdsec.cron.daily

@@ -1,4 +1,5 @@
 #!/bin/sh
-cscli --error hub update && cscli --error hub upgrade
+test -x /usr/bin/cscli || exit 0
+/usr/bin/cscli --error hub update && /usr/bin/cscli --error hub upgrade
 systemctl reload crowdsec
-exit 0
+exit 0