object: fix search user in objectstore

[olivierbouffet]

avoid failed reconcile when multiple multisite objectstore are configured

Signed-off-by: Olivier Bouffet olivier.bouffet@infomaniak.com

Description of your changes:

Which issue is resolved by this Pull Request:
Resolves #9100

Checklist:

• Commit Message Formatting: Commit titles and messages follow guidelines in the developer guide.
• Skip Tests for Docs: Add the flag for skipping the build if this is only a documentation change. See here for the flag.
• Skip Unrelated Tests: Add a flag to run tests for a specific storage provider. See test options.
• Reviewed the developer guide on Submitting a Pull Request
• Documentation has been updated, if necessary.
• Unit tests have been added, if necessary.
• Integration tests have been added, if necessary.
• Pending release notes updated with breaking and/or notable changes, if necessary.
• Upgrade from previous release is tested and upgrade user guide is updated, if necessary.
• Code generation (make codegen) has been run to update object specifications, if necessary.

[travisn]

LGTM, could you change the commit prefix to something more specific like "object:" instead of "operator:"? thanks!

feedback addressed