glance-manage should work like nova-manage, support db sync

[Jesse Keating]

nova-manage uses the syntax "nova-manage db sync". Arguably glance-manage should support the same. For whatever reason glance-manage uses "db_sync" instead. Probably too late to deprecate db_sync, but adding "db sync" and all other db calls would be useful for us people scripting things. this essentially would mean all db operations, (sync, upgrade, downgrade etc) would become subcommands of db as in nova.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/45221

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/47161

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/47161
Committed: http://github.com/openstack/glance/commit/7e6319d95554413f1a0856603f434c9c60b8d256
Submitter: Jenkins
Branch: master

commit 7e6319d95554413f1a0856603f434c9c60b8d256
Author: AmalaBasha <email address hidden>
Date: Wed Sep 18 18:52:47 2013 +0530

    glance-manage should work like nova-manage

    nova-manage supports subcommands of db, for nova-manage,
    eg) 'nova-manage db sync',
    glance manage however has individual commands like db_sync, db_version
    etc. This patch aims at adding the db operations as subcommands to db in
    glance-manage similar to nova and refactoring this bit of code in
    cmd/manage.py

    Fixes: bug 1213197
    Change-Id: I6fad31766bc1cec2a666a7ebc8df5c732007c5f1