package/audit: replace deprecated matchpathcon calls from init script

This patch replace matchpathcon calls in the auditd init script by
calls to selabel_lookup. Indeed, matchpathcon is now deprecated, and
this causes warning during the boot process.

Signed-off-by: José Pekkarinen <jose.pekkarinen@unikie.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 90dd1d6178b01f6da3e59e43d0c7efdf984a72d8)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/audit/S02auditd

@@ -18,9 +18,9 @@ start(){
 
 	# Create dir to store log files in if one doesn't exist. Create
 	# the directory with SELinux permissions if possible
-	command -v matchpathcon >/dev/null 2>&1
+	command -v selabel_lookup >/dev/null 2>&1
 	if [ $? = 0 ]; then
-		mkdir -p /var/log/audit -Z `matchpathcon -n /var/log/audit`
+		mkdir -p /var/log/audit -Z `selabel_lookup -b file -k /var/log/audit`
 	else
 		mkdir -p /var/log/audit
 	fi