bus/selinux: Fix audit message types.

The SELinux log callback includes a message type. Not all messages are
auditable and those that are have varying audit types. An audit message is
a security-relevant event: security state changes, MAC permission denied,
etc.  A message that is auditable is not necessarily sensitive.  Messages
that are not auditable are not security-relevant, like messages about
socket polling errors.  Update the auditing accordingly.

If the message is not auditable, fall through and write it to syslog.

Signed-off-by: Chris PeBenito <chpebeni@linux.microsoft.com>
11 jobs for update-selinux-auditing in 15 minutes and 44 seconds (queued for 5 seconds)
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