* add list of legacy gateways (temporarily)
* change backend-scripts branch to ansible
* Role server-basic: ensure ffmwu config directory is present
* Role service-fastd: add fastd-status script
* role service-fastd-mesh: add templating for fastd peer limit
configuration
- rewrite interface templates for batman, fastd, ffrl and meshbridge
- add package ethtool to role server-basic
- use more ipaddr filters and get rid of unneeded variables in dict
ffrl_exit_server
- change ffrl_public_ipv4_nat variable to ip/prefix format
- update readme files