stable/train

Tox 4.0.0 was recently released and it has several breaking changes. We pin to < 4.0.0 here. We are planning to move forward only on the master charm branches. Tox is also pinned to < 4.0.0 for stable branches in upstream openstack-zuul-jobs as well as in zosci-config. However, the requires= section in the charm's tox.ini file ends up installing tox>4, wiping out the zuul-pinned tox<4 that was already installed installed. This patch fixes that. Related-Bug: #2002788 Change-Id: Ieb12e9abfe00e23b98c4473c459affd15aa6b26f
Cinder Backup to external Swift
Overview
Support for backing up volumes to external swift. Cinder-backup service configuration is propagated to the cinder charm.
In order to use it external swift URL is needed along with authentication details.
To use:
juju deploy cinder
juju deploy cinder-backup-swift-proxy
juju add-relation cinder-backup-swift-proxy cinder
Bugs
Please report bugs on Launchpad. For general questions please refer to the OpenStack Charm Guide.
Description
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