Ability to disable opentelemetry-instrumentation-dbapi sql parameter capture

[stschenk]

Is your feature request related to a problem?
dbapi tracing is working well. The problem I am seeing is that is captures db.statement.parameter for every sql statement. This is a privacy issue for us.

Describe the solution you'd like
I would like the ability to turn off the capturing of db.statement.parameter. Or better yet, to not capturedb.statement.parameter by default and provide a way to turn it on. I suspect that most production services would not want to capture and expose db statement parameters.

[aabmass]

related open-telemetry/opentelemetry-python#855