Skip the test if the specified type is not being run.

For testing AWS auth via an STS AssumeRole request.

Integration tests require a mongod running on localhost:33333.

Kerberos tests are a special type of integration test that test tools with Kerberos authentication against the drivers Kerberos testing cluster because setting up a KDC every time is too brittle and expensive.

For now mongoreplay tests are unique, and will have to be explicitly run.

Testing the tools with a replica set topology.

"TOOLS_TESTING_SSL" and "TOOLS_TESTING_AUTH" are used to configure integration tests to run against different mongod configurations.

Unit tests don't require a real mongod.