maas_remote_syslog_compress is unnecessarily chatty

[Mathieu Trudel-Lapierre]

mtrudel@s8mtl1-deploy1-prd:/etc/cron.d$ cat maas_remote_syslog_compress
# Compress log files not changed in more than 48 hours:
30 4 * * * root find /var/log/maas/rsyslog -type f -mtime +2 -exec bzip2 '{}' \;

This script runs every day. I get mail for this forwarded elsewhere; but there's a risk of filling up disks with these logs if there is enough use of MAAS:

bzip2: Input file /var/log/maas/rsyslog/s8mtl2-wgvpn1-stg/2020-10-22/messages.bz2 already has .bz2 suffix.
bzip2: Input file /var/log/maas/rsyslog/kind-tomcat/2020-04-15/messages.bz2 already has .bz2 suffix.
bzip2: Input file /var/log/maas/rsyslog/kind-tomcat/2020-04-16/messages.bz2 already has .bz2 suffix.
bzip2: Input file /var/log/maas/rsyslog/easy-hippo/2020-12-15/messages.bz2 already has .bz2 suffix.
[...]