%split blocks in order rulebooks

[denballakh]

Rulebooks gain a new feature: %split blocks.

This will be used mainly in routeros rulebooks:

interface
    bridge
        vlan %split
            remove
        port %split
            remove
        remove
        add
        port %split
            add
        vlan %split
            add

This rulebook will enforce order like this, which was not achievable before:

/interface bridge vlan remove
/interface bridge port remove
/interface bridge remove
/interface bridge add
/interface bridge port add
/interface bridge vlan add

[azryve]

This behaviour is much more straightforward than default one.
We should consider making it a default one in future imo.

[denballakh]

This behaviour is much more straightforward than default one. We should consider making it a default one in future imo.

Care should be taken when adapting Huawei order rulebooks for this new feature, they contain pretty weird stuff:

interface */Vbdif\d+/
interface */Eth-Trunk\d+/
interface */LoopBack\d+/
interface */Tunnel.*/
    // some extra rules

interface *
    // some common rules

interface */\S+\.\d+/
interface */Vlanif\d+/

All interfaces will have common rules, but */Tunnel.*/ interfaces will have extra sorting rules.