Rename CBR-related resmoke suites and file directories to match the new query knobs.

For instance:

cbr_automatic -> mixed

cost_choice -> estimate_ranking_effort

Non-exhaustive list of suites:

query_cbr_automatic_cost_choice_aggregation_passthrough

query_cbr_automatic_cost_choice_jscore_passthrough

query_cbr_automatic_no_multiplanning_results_aggregation_passthrough

query_cbr_automatic_no_multiplanning_results_jscore_passthrough

Golden tests directories for the mixed plan ranker under

jstests/query_golden/expected_output/mixed