Enable A/B Testing (via traffic splitting)

[deliahu]

Description

Enable traffic splitting for A/B testing (e.g. send 10% of traffic to A, 90% to B).

Old notes

• Istio: canary blog post, concepts, ingress, traffic shifting, random blog (mentions Istio and Flagger)
• Flagger (requires Prometheus?)
• k8s ticket
• Traefik
• Ambassador blog
• Random blog (uses replicas approach, mentions ingress)
• AWS ALB (not specific to traffic splitting): AWS blog, random blog, random blog 2 part 1 part 2, random blog 3, GCP