Migration: MAC/IP binding

[gsanchietti]

Allow migrating MAC/IP binding configurations from NethServer7 to ensure a smooth transition for users upgrading to the latest version.

This includes migrating existing bindings and ensuring that the new system can recognize and properly utilize these configurations.

The procedure should:

• migrate binding status: if binding was enable on NS7, it must be enabled on all NS8 interfaces
  original configuration is stored inside: firewall MACValidation
• map the original configuration to soft and hard binding

NS7 configuration is stored inside the following options:

• config getprop firewall MACValidation, to enable or disable the validation
• config getprop firewall MACValidationPolicy can be drop or accept

These options must be mapped to:

• 0, if MACValidation is disabled
• 1 (soft binding), if MACValidation is enabled and MACValidationPolicy is accept
• 2 (hard binding), if MACValidation is enabled and MACValidationPolicy is drop

Other changes:

• make sure MAC binding is listed between migrated configuration inside nethserver-firewall-migration UI
• update the documentation to reflect the new feature