openstak cli doesn't set os_distro correctly required by magnum clusters

[yatin]

After start using openstack cli instead of glance for creating image, cluster-template cannot be created: I2785ed54da7d2e2a162d163a8a9fa4c1cfe083be.

Reason:- magnum requires 'os_distro" property to be set on image, Earlier when using glance cli as below 'os-distro' converted into 'os_distro'
glance image-create --name CoreOS \
                        --visibility public \
                        --disk-format=qcow2 \
                        --container-format=bare \
                        --os-distro=coreos \
                        --file=coreos_production_openstack_image.img

after the patch when using openstack cli,'os-distro' remains 'os-distro' so magnum doesn't find 'os_distro'. This can be fixed either we update the openstack cli in magnum docs to use 'os_distro' or we start accepting both as valid 'os_distro' and 'os-distro'

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/450250

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/450250
Committed: https://git.openstack.org/cgit/openstack/magnum/commit/?id=bb16a62732ce19d2ee3ac36d2d6ecd42863ace50
Submitter: Jenkins
Branch: master

commit bb16a62732ce19d2ee3ac36d2d6ecd42863ace50
Author: yatinkarel <email address hidden>
Date: Mon Mar 27 19:37:16 2017 +0530

    Use 'os_distro' instead of 'os-distro'

    Change-Id: I4fd8c4db9f2297019ead053b97aa0c8c577864bb
    Closes-Bug: #1676450

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/magnum 5.0.0 release.