Service Mesh - Integrate Calico Policies

[alxbl]

https://docs.tigera.io/calico/latest/network-policy/adopt-zero-trust
https://docs.tigera.io/calico/latest/network-policy/istio/app-layer-policy

[alxbl]

Following the guide blindly bricked my istio version. Will do this a bit later when everything is working fine.