Move to -Svc pool provider (7.0 RC1)

[MattGal]

{PR title}

• You've read the Contributor Guide and Code of Conduct.
• You've included unit or integration tests for your change, where applicable.
• You've included inline docs for your change, where applicable.
• There's an open issue for the PR that you are making. If you'd like to propose a new feature or change, please open an issue to discuss the change or find an existing issue.

Summary of the changes (Less than 80 chars)

Description

Moves pool providers for release branch to a -Svc pool, outside of daily, main-branch quotas.

Fixes #{bug number} (in this specific format)

[dougbu]

@MattGal aren't we close enough to the close of RC1 that not using -Svc pools for this prerelease branch is Just Fine:tm:❔

In any case, we need at most one of this PR or #43529. Either we don't need this PR or the final commit will automatically be taken forward into release/7.0.

[MattGal]

@MattGal aren't we close enough to the close of RC1 that not using -Svc pools for this prerelease branch is Just Fine™️❔

In any case, we need at most one of this PR or #43529. Either we don't need this PR or the final commit will automatically be taken forward into release/7.0.

I won't be hurt if you just close it, I blasted out a bunch of PRs just now to try to move off repos that had built a "release" named branch in the last week. So, if it's not useful, just close it; I don't necessarily know all the branches that matter.

[dougbu]

Closing in favour of #43529. Thanks @MattGal❕