MetalLB avoidBuggyIPs default changed to true, configuration option removed

[zeeZ]

In the CRD rework of #9120 (released with v2.22.0), the option metallb_avoid_buggy_ips was removed and the default was changed from false to a hardcoded true.

Prior to that release, I had the following config:

metallb_ip_range:
- "10.11.100.0-10.11.199.255"

with the new equivalent:

metallb_config:
  address_pools:
    primary:
      ip_range:
      - "10.11.100.0-10.11.199.255"
      auto_assign: true

After the upgrade, the LoadBalancer service for 10.11.100.0 no longer worked and the address could not be reassigned. I had to manually edit the pool to set avoidBuggyIPs: false.

• the default should (probably) be reverted to false
• it should be possible to change the behavior via config again