lvm_mirrors in volume_migration should be converted to int

[Flavio Percoco]

The lvm driver parses the host's location info and extracts the number of mirrors from there. In this process, it doesn't convert the lvm_mirros to int, which makes it fail further in the process due to some boolean checks done on that value.

http://git.openstack.org/cgit/openstack/cinder/tree/cinder/volume/drivers/lvm.py#n693

https://git.openstack.org/cgit/openstack/cinder/tree/cinder/brick/local_dev/lvm.py#n358

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/60265

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/60265
Committed: http://github.com/openstack/cinder/commit/1dff30492f0ce1df3ef01ccc21353248a7207709
Submitter: Jenkins
Branch: master

commit 1dff30492f0ce1df3ef01ccc21353248a7207709
Author: Flavio Percoco <email address hidden>
Date: Thu Dec 5 16:14:39 2013 +0100

    Convert lvm_mirrors to int

    When the location_info is parsed and `lvm_mirrors` extracted, it is not
    being converted to int. This causes some boolean checks to return True
    even when there are not mirrors enabled because of the u'0'.

    Closes-bug: #1258133
    Change-Id: I67c463d9f139fe326bbcab4d193c45459129b514

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/havana
Review: https://review.openstack.org/60957

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/60957
Committed: https://git.openstack.org/cgit/openstack/cinder/commit/?id=a61b9678f1abdd14964581cd49e7a25a7635749e
Submitter: Jenkins
Branch: stable/havana

commit a61b9678f1abdd14964581cd49e7a25a7635749e
Author: Flavio Percoco <email address hidden>
Date: Thu Dec 5 16:14:39 2013 +0100

    Convert lvm_mirrors to int

    When the location_info is parsed and `lvm_mirrors` extracted, it is not
    being converted to int. This causes some boolean checks to return True
    even when there are not mirrors enabled because of the u'0'.

    Closes-bug: #1258133
    (cherry picked from commit 1dff30492f0ce1df3ef01ccc21353248a7207709)

    Change-Id: I67c463d9f139fe326bbcab4d193c45459129b514