Add logs that clearly states that db operation is finished and sleep started if --sleep-after is specified

[vandot]

Context

Summary

Expected behavior

When db related operation is finished clearly log that it is finished.
If --sleep-after is specified clearly log that sleep operation has started with time specified inside the command

Actual behavior

db operation is finished and sleep starts but you can only be sure because CPU consumtion is down

Steps to reproduce

Issue any db related operation and wait for it to finish, specified logs will be missing

Possible solution

Add logs