[CSM-451] Add request processing duration to logs
[CSM-451] Add request processing duration to logs

(cherry picked from commit 3635bb6474c8bfc504f64b190c3c40ed7bf34e90)

input-output-hk/pos-haskell-prototype,input-output-hk/cardano-sl,input-output-hk/pos-haskell-prototype,input-output-hk/cardano-sl,input-output-hk/pos-haskell-prototype,input-output-hk/cardano-sl,input-output-hk/cardano-sl