In case safe config takes a long time to get committed, Atlas needs to retry and be able to poll the status of the current config in order to run the next reconfig command.

Some options:
1. Run the next reconfig anyway and get a ConfigurationInProgress error if the previous isn't committed yet.
2. Add a dryRun option to reconifg, which only checks the commitment of the previous config without actually accepting the config.
3. Report in the response of replSetGetConfig if a new option is present.
4. Report the config status in replSetGetStatus.