commit e241fb53729be7d2d9532a98ba73d79e0c155fe8
author Adithya Chakilam <achakilam@nvidia.com> Mon Sep 08 09:23:18 2025 -0500
committer Adithya Chakilam <achakilam@nvidia.com> Mon Sep 08 14:57:33 2025 -0500
tree cc07ae9d8f7f40ac918caca956483c1a935145b0
parent 85610b43e365ae09974cbf6ebce265aca0dd1867

Share the threads/permits for soft maxes

```
[quota "project-a"]
    softMaxStartPerUserForQueue = 5 SSH-Interactive-Worker
[quota "project-b"]
    softMaxStartPerUserForQueue = 10 SSH-Interactive-Worker
```

Previously, for the above configuration, The computation of free threads
was buggy since each instance is not aware of the permits acquired by
the other quota. This results in config not being enforced correctly.
Fix this to only have single shared QueueStats object.

Change-Id: I7e19bc4370c8fd30e158092f7b0d1f12e59fa5e2