Verify ML2 type driver exists before calling del

[OpenStack Infra]

https://review.openstack.org/111263
commit ad82fadf546d39f3c905b5fb633f64afb7875a6f
Author: Kevin Benton <email address hidden>
Date: Sun Apr 6 04:57:36 2014 -0700

    Verify ML2 type driver exists before calling del

    Verifies that an ML2 type driver exists for a given
    segment type before attempting to call the release_segment
    method on it. Logs an error if a type driver is not
    found.

    This covers the case where a segment is created with
    a given type and then ML2 is reconfigured without
    support for that type.

    DocImpact
    The ML2 documentation should be updated with a warning
    that disabling a network type driver and re-enabling
    it later may lead to possible DB inconsistencies.

    Closes-Bug: #1292102
    Change-Id: I65a35abf3ed57347bb6e8fee228f8c0697217c00
    (cherry picked from commit af89d74d2961db6a04572375150ad908c9e72e78)

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/123030

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/123030
Committed: https://git.openstack.org/cgit/openstack/openstack-manuals/commit/?id=1cb05c0738bd355774e755adfde0330696402f86
Submitter: Jenkins
Branch: master

commit 1cb05c0738bd355774e755adfde0330696402f86
Author: Anne Gentle <email address hidden>
Date: Sun Sep 21 20:54:04 2014 -0500

    Adds a warning about re-configuring ML2

    - Added to install guide, could be added to networking guide as well.
    Closes-bug: 1370300

    Change-Id: I4a23e24339ebaf9cfd1e29559f76e8ed77455178

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/openstack-manuals 15.0.0 release.