Comment 1 for bug 1888349

Reviewed: https://review.opendev.org/742115
Committed: https://git.openstack.org/cgit/openstack/glance/commit/?id=ffd2f5e63f8b7aebc8986c05aea249c75a8a692b
Submitter: Zuul
Branch: master

commit ffd2f5e63f8b7aebc8986c05aea249c75a8a692b
Author: Abhishek Kekane <email address hidden>
Date: Tue Jul 21 09:18:31 2020 +0000

    Fix broken glance-cache-manage utility

    glance-cahce-manage is broken due to circilar imports.
    Fixed the same by importing 'prefetcher' module right before
    'Prefetcher' object is initialized.

    Closes-Bug: #1888349
    Change-Id: I57d473572ca0a341082bacc3883cd9f763d77fa7