Fix context deadline exceeded issues

[asimpleidea]

Right now, there is an issue that doesn't allow the operator to understand when an error is due to time out expiration. The operator can still terminate a call due to time out, but when it checks the error to see if the timeout expired, that check never happens because of mis-matched types. In fact this mostly happen when grpc, because it encapsulates the error and thus is not of type context deadline exceeded anymore.

This is not a critical bug but will be fixed on next versions anyway.