Use custom image for Envoy container with necessary debugging tools or a debug sidecar for debugging

[shashankram]

For debugging traffic issues, tcpdump/tshark is useful. Add this to the sidecar image to help debug traffic issues without mutating the pods.

[draychev]

Adding post-MVP tag - to make sure that we don't block MVP launch on this. This is important tooling, we can work on it in parallel while launching.

[github-actions]

This issue will be closed due to a long period of inactivity. If you would like this issue to remain open then please comment or update.

[github-actions]

Added default label kind/needed. Please consider re-labeling this issue appropriately.

[phillipgibson]

The OSM project has been officially archived by the CNCF. There will be no more new development on any repo under the OpenServiceMesh organization.