The script from SERVER-36069 writes the mongoebench-compatible JSON config files to a src/third_party/mongo-perf/mongoebench/ directory. The "fetch benchmark embedded files" added to Evergreen as part of SERVER-36076 extracts the mongoebench-compatible JSON config files to a top-level benchrun_embedded/ directory. The benchrun_embedded*.yml test suites similiarly run the mongoebench-compatible JSON config files from a top-level benchrun_embedded/ directory.

We should have these directories be consistent with each other so that resmoke.py can be used to run the tests, regardless of whether the mongoebench-compatible JSON config files were generated locally or downloaded from S3. We should also add an entry for the directory to a .gitignore file because we made a decision to not include the mongoebench-compatible JSON config files in the source tree.