Fix reconciler stopping allocs

[mismithhisler]

Description

Jobs with more than one allocation are not being stopped correctly due to a bug where the results in different alloc sets were being overwritten. These changes update the reconciler stop logic to stop all allocations in the job.

Testing & Reproduction steps

Run a job with more than one task group, and then stop that job. All allocations should be stopped.

Links

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Changes to Security Controls

Are there any changes to security controls (access controls, encryption, logging) in this pull request? If so, explain.

[pkazmierczak]

LGTM and a good catch, sorry to see this hasn't been caught by testing before...

[pkazmierczak]

I think it'd be useful to backport this to 1.11 at least. Backporting to earlier versions would be great but there was a large refactor in 1.11 so that could mean having to write PRs for 1.10.x+ent and 1.8.x+ent from scratch.

[mismithhisler]

@pkazmierczak I looked at 1.10.x+ent and 1.8.x+ent and they are good to go