Merge pull request #67122 from Naveenaidu/wip-naveen-fix-RemoteReservationRevoked-race-condition

osd/PeeringState: handle race condition of RemoteReservationRevoked event for Backfilling state

Reviewed-by: Bill Scales <bill_scales@uk.ibm.com>
Reviewed-by: Radoslaw Zarzynski <rzarzyns@redhat.com>