fix: Disable default logging for Kafka in Ansible Playbooks

[vtaskow]

What this PR does / why we need it:
When running Seldon via Ansible playbooks, Kafka logs everything, which makes it difficult to inspect the logs of seldon-pipelinegateway when using pipelines.

[agrski]

Rather than removing the config from the Helm chart, I'd instead suggest adding a Helm variable to control it. Note that this is not config for Kafka itself, but rather for our components about Kafka.

Being able to modify log verbosity is useful for both developers and end users, so I'd prefer not to see utility removed!

[ukclivecox]

Rather than removing the config from the Helm chart, I'd instead suggest adding a Helm variable to control it. Note that this is not config for Kafka itself, but rather for our components about Kafka.

Being able to modify log verbosity is useful for both developers and end users, so I'd prefer not to see utility removed!

There is a helm value for it. This is the ansible use of it which should be configurable via allowing helm values or for now removed so its not hard wired.

[agrski]

There is a helm value for it. This is the ansible use of it which should be configurable via allowing helm values or for now removed so its not hard wired.

Ah yes, I forgot the context. I'd still be in favour of this being configurable easily. I don't mind if that's even just leaving it as info level so it's still obvious that setting is there, without having to dig around to find it.