This can be done in parallel with any other PM-1546 work.
The opts parameter has the following fields:
- pids optional array of pids to pass into hang-analyzer. If not specified will use the pids of child and/or peer mongo processes obtained via TestData or shell built-ins (both added in other tickets)
- args optional array of strings - additional set of args to pass to hang-analyzer. If not specified will use reasonable defaults (probably just empty). This is a "private" parameter (not documented or required to be backward-compatible) because most users should never need to use/see/set it.