Align Libreswan startup with the current package

The systemd unit no longer uses _stackmanager.

Signed-off-by: Stephen Kitt <skitt@redhat.com>

Author: skitt

package/pluto

@@ -6,8 +6,8 @@ set -e
 
 # These are the ExecStartPre lines from the systemd service definition
 /usr/libexec/ipsec/addconn --config /etc/ipsec.conf --checkconfig
-/usr/libexec/ipsec/_stackmanager start
-/usr/sbin/ipsec --checknss
+/usr/sbin/ipsec checknss
+/usr/sbin/ipsec checknflog
 
 # Start the daemon itself with any additional arguments passed in
 exec /usr/libexec/ipsec/pluto --leak-detective --config /etc/ipsec.conf --nofork  "$@"