Set min mongodb to 3.6 in prep for parse-server 4.0 (#6445)

* Set min mongodb to 3.6 in prep for parse-server 4.0

fixes: 6444

* don't use anonymous functions when we can just
pass the function.

Also remove the boolean argument in tests that no longer exists.

* generate the correct lock file.  ooops.

src/Options/index.js

@@ -64,10 +64,6 @@ export interface ParseServerOptions {
   databaseOptions: ?any;
   /* Adapter module for the database */
   databaseAdapter: ?Adapter<StorageAdapter>;
-  /* Circumvent Parse workaround for historical MongoDB bug SERVER-13732
-  :ENV: PARSE_SKIP_MONGODB_SERVER_13732_WORKAROUND
-  :DEFAULT: false */
-  skipMongoDBServer13732Workaround: ?boolean;
   /* Full path to your cloud code main.js */
   cloud: ?string;
   /* A collection prefix for the classes