O3.1.2 - End to end measurement tooling

[anupsdf]

End to end measurement tooling
#5330
stellar/supercluster#394

[anupsdf]

Work is completed:
#5392
#5359

https://github.com/stellar/stellar-supercluster/pull/386
stellar/supercluster#417

Documented: https://docs.google.com/document/d/1sB4tAf9S9g190qem_6FYpauD7PqNhz9A0tuEyMtST6I/edit?tab=t.0