Low: asterisk: improve directory creation on start

- Wrap the install(8) invocation in ocf_run so we get a useful log
  message on error.
- Exit if we fail to create a required directory.
- Remove superfluous mkdir/chown block.

heartbeat/asterisk

@@ -279,18 +279,15 @@ asterisk_start() {
     fi
 
     for i in $ASTRUNDIR $ASTLOGDIR $ASTLOGDIR/cdr-csv $ASTLOGDIR/cdr-custom; do
-	[ -d $dir ] || install -d -o $OCF_RESKEY_user -g $OCF_RESKEY_group $i
+	if [ ! -d "$i" ]; then
+	    ocf_run install -d -o $OCF_RESKEY_user -g $OCF_RESKEY_group $i \
+		|| exit $OCF_ERR_GENERIC
+	fi
     done
 
     # set MAXFILES
     ulimit -n $OCF_RESKEY_maxfiles
 
-    if [ ! -d $ASTRUNDIR ] ; then
-	ocf_log info "Creating PID dir: $ASTRUNDIR"
-	mkdir -p $ASTRUNDIR
-	chown $OCF_RESKEY_user:$OCF_RESKEY_group $ASTRUNDIR
-    fi
-
     # Determine whether Asterisk PBX is supposed to run in Realtime mode
     # or not and make asterisk daemonize automatically
     local asterisk_extra_params