pbr: update to 1.1.6-20

This version is the final version supporting iptables and:

* it separates the old iptables/nft-capable init script from the new nft-only init script
* the new nft-script is a significant rewrite of the old recursive calls/policy parsing
  and tries to create inline nft sets which offers performance improvements

Signed-off-by: Stan Grishin <stangri@melmac.ca>

net/pbr/files/usr/share/nftables.d/table-post/30-pbr.nft

@@ -1,3 +1,4 @@
+chain pbr_dstnat_lan {}
 chain pbr_forward {}
 chain pbr_input {}
 chain pbr_output {}