1. Add a new feature to resmoke.py to associate tests with tags based on the contents of a separate YAML file.

selector: 
  js_test: 
    jstests/core/bench_test1.js: 
    - unreliable

Note: This format may be extended to support the "cpp_unit_test" test kind in the future. (SERVER-22170)

2. Add a --tagFile command line option to resmoke.py that defaults None. The resmoke.py invocation in the "run tests" function of etc/evergreen.yml project configuration will always specify --tagFile=etc/test_lifecycle.yml. (An etc/test_lifecycle.yml file that has the aforementioned structure, but doesn't specify any files should be committed alongside this work.)

3. Update the filter_jstests() function in the selector.py module to additional find tags associated with a particular test file additional from the tag file.