mongo DB instrumentation doesn't capture db.statement properly

[avzis]

According to the specs - db.statement should capture the entire request, and not only the command name.

Steps to reproduce
Instrument a client using PymongoInstrumentor.
Send a request to the db.

What is the expected behavior?
Produce a span with a db.statement value containing the whole request.

What is the actual behavior?
Produce a span with db.statement containing only the request name.

Additional context
Another discussion here

Another thing that needs to be fixed is adding the ability to hide the db.statement value on demand, in order to hide sensitive data when needed.

If you can, assign this to me - I would like to solve it :)