meta-intel: rsyslog: Use a monotonic timer for log rotation

This changes to a monotonic timer for log rotation, so it will
not be affected by changes in calendar time.

Tested:
Confirmed that the log rotation runs every 60 seconds.

Change-Id: If1a479557821faa0d2875b2c8dbf8675edec9fef
Signed-off-by: Jason M. Bills <jason.m.bills@linux.intel.com>
diff --git a/meta-common/recipes-extended/rsyslog/rsyslog/rotate-event-logs.timer b/meta-common/recipes-extended/rsyslog/rsyslog/rotate-event-logs.timer
index 148f8e4..ae1185e 100644
--- a/meta-common/recipes-extended/rsyslog/rsyslog/rotate-event-logs.timer
+++ b/meta-common/recipes-extended/rsyslog/rsyslog/rotate-event-logs.timer
@@ -2,7 +2,8 @@
 Description=Run rotate-event-logs.service every minute
 
 [Timer]
-OnCalendar=*-*-* *:*:00
+OnActiveSec=60
+OnUnitActiveSec=60
 
 [Install]
 WantedBy=timers.target