The following jscore tests:

• jstests/core/dbadmin.js
• jstests/core/opcounters_write_cmd.js
• jstests/core/read_after_optime.js
• jstests/core/capped_update.js

only works with single standalone mongod. They don't work neither with replicaset nor with a sharded cluster.

All these tests needs to be excluded from a wide variety of suites, at least from all the replicaset and sharding passthrough suites. At the moment we are blacklisting explicitely every one of these tests in ~45 suites.

This can be easily avoided by tagging this test with the new tag assumes_standalone_mongod and use tag exclusions rules in all those suites.