Cherry-pick the changes from 05ec08f that were made on the v3.6.9-dbaas-testing as part of SERVER-39097 to account for the following restrictions:

• assumes_superuser_permissions - uses commands that aren't supported due to an assumption that the tests only ever run with the __system user.
• requires_spawning_own_processes - uses MongoRunner, ReplSetTest, or ShardingTest to spawn its own MongoDB cluster.
• uses_multiple_connections - uses .host on a Mongo connection object to establish a separate connection. This leads to omitting the auth + TLS connection string options.
• uses_testing_only_commands - uses commands that are only available when the server is running with --setParameter enableTestCommands=1.