Make the protocol field configurable in conntrack

[ronensc]

Currently, the conntrack module looks for the protocol in the field Proto to filter out non-transport flowlogs.

This breaks make ocp-deploy in a way that connections aren't being tracked. The reason is that Proto is missing (because it was renamed to proto) so all flowlogs are filtered out.

flowlogs-pipeline/contrib/kubernetes/flowlogs-pipeline.conf.yaml

Lines 42 to 43 in 914d470

	- input: Proto
	output: proto

I suggest to add ProtocolFieldName setting to the conntrack configuration to allow specifying a custom field name for the protocol field other than Proto. If this setting is not set, Proto could be set as a default for backward compatibility.

[jotak]

sounds good to me
Looks like there's also the "Duplicate" field being hardcoded the same way, in generic_map.go

[ronensc]

Correct. Thanks for bringing this up. I forgot to mention this.