libaudit: limit to 5 selinux denials per sec

watchdog is triggering on shamu. This may be due to an excessive
number of SELinux denials. Drop the limit from 20/sec to 5/sec.

Bug: 19950451
Bug: 19949988
Change-Id: I979f11e17c241ff2ebda4dec9694ef441dc5d0ed
1 file changed