OCI Network Loadbalancer only supports sessionAffinity: None for v0.20.0

[atomic-tang]

Description

Upgraded to version 0.20.0 with helm on OCI but the network loadbalancer failed to start up due to the following error:

Error syncing load balancer: failed to ensure load balancer: invalid service: OCI only supports SessionAffinity "None" currently

Other loadbalancers on OCI cannot be used as they do not support UDP traffic.

[rg0now]

Guess we'll have to add yet another Gateway annotation to optionally disable client affinity. That being said, the policy of OKE to straight our reject an LB Service using a feature that's been GA for I don't know how many Kubernetes releases is at least questionable I'd say.

[rg0now]

Could you please make a quick test to check whether the fix solved your problem? Just add the annotation stunner.l7mp.io/disable-session-affinity: true to your Gateway, this would revert the LB Service session affinity setting to None. Hopefully this will make OCI happy.

Feel free to reopen if something new shows up.