docs(k8saudit-gke): Explain Pub/Sub setup alternatives #452
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What type of PR is this?
/kind documentation
Any specific area of the project related to this PR?
/area plugins
/area documentation
What this PR does / why we need it:
Explaining the Pub/Sub setup alternatives: Pub/Sub topic in same project as GKE cluster(s) or a shared Pub/Sub topic used as log sink by every project with GKE cluster(s).
Which issue(s) this PR fixes:
Fixes #441
Special notes for your reviewer: