test(collection tests): Clean up collection_tests and make them DRY (#2041)
test(collection tests): Clean up collection_tests and make them DRY (#2041)

Fixes NODE-1986

* test(collection tests): Clean up collection_tests and make them DRY

* refactor and modernize tests, remove deprecated functions

mongodb/node-mongodb-native,mongodb/node-mongodb-native,mongodb/node-mongodb-native,mongodb/node-mongodb-native