See this spike for more details: https://jira.mongodb.org/browse/DAG-199

As a server engineer,
I should be able to pull tasks into a selected-tests patch build,
And not have the selected_tests_gen task error because it is generating tasks with the same name as the task(s) I pulled in.

AC:

• The selected_tests_gen task within a selected-tests patch with the following changed files, and the sharding_op_query task manually pulled into the patch, should succeed: https://evergreen.mongodb.com/version/5ec6eb797742ae0c9e7520de##1