Insert a little change in template to exclude unused LXC/QEMU vm.

• Create two macros: {$LXC.ID.EXCLUDE} and {$QEMU.ID.EXCLUDE}
• Modify the LXC an QEMU discovery rule inserting two filters:
• {#QEMU.ID}

  does not match {$QEMU.ID.EXCLUDE}

• and 
• {#LXC.ID}

  does not match {$LXC.ID.EXCLUDE}

Thanks!