Marco, CTO of Kong here. This is exactly what Kong has been doing for a while and with the newly announced Kong 1.0 release [1] (2 days ago) we also support Service Mesh with a lightweight runtime that has been running in production since 3.5 years across multiple platforms, hybrid container orchestration platforms and even hybrid baremetal/cloud deployments.
GA for Kong 1.0 will include Service Mesh (we have RC1 now, and RC2 coming soon).