AWS SDK Plugin for SQS causes error by injecting Message Attribute

[jmclean-cnexus]

Describe the bug
When using the aws-sdk plugin, specfiically for the SQS service, the dd-trace module will inject a message attribute into all of our SQS requests. The limit for MessageAttributes with the AWS SQS SendMessage API is 10.

We are receiving failures for all of our SQS SendMessage Requests because datadog intercepts and add a MessageAttribute, making our MessageAttribute count be 11 (rather than the AWS accepted 10). The lines at fault are here

Datadog should NOT be intercepting any requests, especially if it introduces an opportunity to fail such. This code should be removed from the implementation as it can be destructive.

Environment
Production

• Operation system:
  Amazon Linux 2
• Node version:
  8.5.0
• Tracer version:
  0.24.1
• Agent version:
  Latest (ie 7.x)