Compile the catalog (with a notice) when kafka and zookeeper are misconfigured

When the profile::kafka::broker or profile::zookeeper profiles are enabled on a server that's not configured in any cluster, the catalog compilation completely fails.

Fix both profiles to generate a notice when they're misconfigured instead, which allows doing the base setup before enabling membership in any clusters.

octocatalog-diff reports no changes on the production kafka brokers, and succeeds in compiling the catalog of the new kafka1 staging server.