DVS: Verify certificate on vCenter connections

[OpenStack Infra]

https://review.openstack.org/217845

Dear documentation bug triager. This bug was created here because we did not know how to map the project name "openstack/vmware-nsx" to a launchpad project name. This indicates that the notify_impact config needs tweaks. You can ask the OpenStack infra team (#openstack-infra on freenode) for help if you need to.

commit f4a031fd0256b5090abd2d5ec43c583f251fc334
Author: Eric Brown <email address hidden>
Date: Sun Aug 23 22:36:11 2015 -0700

    DVS: Verify certificate on vCenter connections

    The DVS driver was not validating the vCenter certificate. This
    patch utilizes the function already available in oslo.vmware to
    verify certs.

    DocImpact:
    This introduces two config options: cafile and insecure.

    Change-Id: I3162437f219946e0acfa63ff0ae35f36a7e3bba7
    Closes-Bug: #1487962