rgw: fix bi put not using right bucket index shard

[ivancich]

When radosgw-admin bi put adds an entry for an incomplete multipart
upload, the bucket index shard is not calculated correctly. It should
be based on the name of the ultimate object. However the calculation
was including the added organizational suffixes as well. This corrects
that.

NOTE: When entries are not put in the correct index shard, unordered
listing becomes unreliable, perhaps causing entries to be skipped or
infinite loops to form.

Signed-off-by: J. Eric Ivancich ivancich@redhat.com
Fixes: https://tracker.ceph.com/issues/53248

Checklist

• Tracker (select at least one)
  • References tracker ticket
  • Very recent bug; references commit where it was introduced
  • New feature (ticket optional)
  • Doc update (no ticket needed)
• Component impact
  • Affects Dashboard, opened tracker ticket
  • Affects Orchestrator, opened tracker ticket
  • No impact that needs to be tracked
• Documentation (select at least one)
  • Updates relevant documentation
  • No doc update is appropriate
• Tests (select at least one)
  • Includes unit test(s)
  • Includes integration test(s)
  • Includes bug reproducer
  • No tests
• Teuthology
  • Completed teuthology run
  • No teuthology test necessary (e.g., documentation)

Show available Jenkins commands

• jenkins retest this please
• jenkins test classic perf
• jenkins test crimson perf
• jenkins test signed
• jenkins test make check
• jenkins test make check arm64
• jenkins test submodules
• jenkins test dashboard
• jenkins test dashboard cephadm
• jenkins test api
• jenkins test docs
• jenkins render docs
• jenkins test ceph-volume all
• jenkins test ceph-volume tox

[ivancich]

Teuthology Results:

• https://pulpito.ceph.com/ivancich-2021-11-16_04:33:57-rgw-wip-eric-testing-1-distro-basic-smithi/
• https://pulpito.ceph.com/ivancich-2021-11-16_04:34:19-rgw-wip-eric-testing-1-distro-basic-smithi/

No regressions.