Camel AWS-SQS: integration test doesn't delete sqs queue in AWS

When I was testing fix of https://issues.redhat.com/browse/ENTESB-17940, I noticed, that when integration tests are finished, there is one queue no deleted in AWS.

Another small improvement: Real aws credentials have to be inserted into java files in several places. It would make sense to make such change easier (for example by exporting several AWS credential properties).

export AWS_ACCESS_KEY=xxx
export AWS_SECRET_KEY=xxx
export AWS_REGION=xxx