Comment 2 for bug 1791741

Reviewed: https://review.openstack.org/636700
Committed: https://git.openstack.org/cgit/openstack/blazar/commit/?id=00760ae25bc528c97769426b7a3914b91becf32a
Submitter: Zuul
Branch: master

commit 00760ae25bc528c97769426b7a3914b91becf32a
Author: Pierre Riteau <email address hidden>
Date: Mon Feb 18 17:50:54 2019 +0000

    Prevent leases from being deleted during event execution

    A user can request to delete a lease while it is changing state via
    event execution, which can trigger an error condition as on_end will
    attempt to delete the corresponding aggregate.

    This commit prevents a lease from being deleted while its start_lease or
    end_lease events are in progress.

    Change-Id: I73bde0219b6ea30d16564fd2507fd59d52cbfa6a
    Closes-Bug: #1791741