evolinux-base: Fix our zsyslog rotate config that doesn't work on Debian 10

I've noticed that some log files, especially /var/log/syslog were empty.
After investigating, I've realized that it was happening after a log
rotation by logrotate.

The old mechanism, `invoke-rc.d rsyslog rotate` isn't working anymore on
Debian 10. It will fail with a not so explicit message :

[FAIL] Closing open files: rsyslogd failed!

Long story short, it seems that the pid file (`/run/rsyslogd.pid`) isn't
created any more, so start-stop-daemon as used by /etc/init.d/rsyslog
will fail. Explaining the error message.

Debian 10 rsyslog now brings `/usr/lib/rsyslog/rsyslog-rotate` that is
used by logrotate. It will send the signal HUP the 'right' way, so
rsyslog will be aware of the log rotation.

Sadly, this script isn't present in Debian 9 nor 8, so the logrotate
configuration for rsyslog is now a template, using the right command for
the right version.

CHANGELOG.md

@@ -62,6 +62,7 @@ The **patch** part changes incrementally at each release.
 * php: add missing handler for php7.3-fpm
 * roundcube: fix typo for roundcube vhost
 * tomcat: fix typo for default tomcat_version
+* evolinux-base: Fix our zsyslog rotate config that doesn't work on Debian 10
 
 ### Security
 

evolinux-base/tasks/logs.yml

@@ -24,6 +24,12 @@
     dest: /etc/logrotate.d/
   when: evolinux_logs_logrotate_confs
 
+- name: Copy rsyslog logrotate file
+  template:
+    src: logs/zsyslog.j2
+    dest: /etc/logrotate.d/zsyslog
+  when: evolinux_logs_logrotate_confs
+
 - name: Configure logrotate.conf
   replace:
     dest: /etc/logrotate.conf

evolinux-base/templates/logs/zsyslog.j2

@@ -8,7 +8,11 @@ notifempty
 delaycompress
 compress
 postrotate
+{% if ansible_distribution_major_version | version_compare('10', '>=') %}
+    /usr/lib/rsyslog/rsyslog-rotate
+{% else %}
     invoke-rc.d rsyslog rotate > /dev/null
+{% endif %}
 endscript
 
 /var/log/daemon.log
@@ -32,4 +36,4 @@ endscript
 {
     daily
     rotate 365
-}
+}