R1:bba418600591

Allow "bin/repository thaw" to accept "--all-repositories" instead of a list of repositories

Summary:
Ref T13222. See PHI992. If you've lost an entire cluster (or have lost a device and are willing to make broad assumptions about the state the device was in) you currently have to `xargs` to thaw everything or do something else creative.

Since this workflow is broadly reasonable, provide an easier way to accomplish the goal.

Test Plan:
- Ran with `--all-repositories`, a list of repositories, both…