object: fix search user in objectstore (backport #9143)

[mergify]

This is an automatic backport of pull request #9143 done by Mergify.
Cherry-pick of 184f2fd has failed:

On branch mergify/bp/release-1.7/pr-9143
Your branch is up to date with 'origin/release-1.7'.

You are currently cherry-picking commit 184f2fdb3.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   pkg/operator/ceph/object/objectstore.go

no changes added to commit (use "git add" and/or "git commit -a")

Cherry-pick of e06c6fc has failed:

On branch mergify/bp/release-1.7/pr-9143
Your branch is ahead of 'origin/release-1.7' by 1 commit.
  (use "git push" to publish your local commits)

You are currently cherry-picking commit e06c6fc3e.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   pkg/operator/ceph/object/objectstore.go

no changes added to commit (use "git add" and/or "git commit -a")

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/github/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

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[leseb]

@olivierbouffet would you mind sending a PR against the release-1.7 that fixes the conflicts? Thanks!

[travisn]

@olivierbouffet would you mind sending a PR against the release-1.7 that fixes the conflicts? Thanks!

This is already in release-1.7 with the original PR #9143, no need for the backport