Comment 2 for bug 1797977

Reviewed: https://review.openstack.org/642526
Committed: https://git.openstack.org/cgit/openstack/stx-update/commit/?id=0ea37b36a11fc556f4e7ac9c56fde33e150a75ed
Submitter: Zuul
Branch: master

commit 0ea37b36a11fc556f4e7ac9c56fde33e150a75ed
Author: Don Penney <email address hidden>
Date: Mon Mar 11 10:52:00 2019 -0400

    Trigger garbage collection to free WSGI resources

    The wsgiref.simple_server is used by patching for handling
    API requests. When uploading files, the server opens a file
    handle for the temporary resource, but does not close it.
    Instead, it's left to periodic garbage collection to free the
    resources. Until garbage collection, however, this means
    disk space is still in use for the deleted temporary file,
    as the handle is left open.

    This update adds a call to gc.collect() after the call
    to simple_server.handle_request() to immediately free all
    unused resources.

    Change-Id: Ie39213dad540448cede46cc8e580d31582419dcc
    Closes-Bug: 1797977
    Signed-off-by: Don Penney <email address hidden>