Versions review - necessary updates and features

[matuskosut]

Long time without updates. Let's begin with keeping up with libjuju (and other dependencies).

To support authentication from remote machine we have to add --cacert $CACERT.

We will be changing version to 0.2.0 - making some features more general

Changed

• Dependency versions updated to current libjuju (waiting only for macaroonbakery to also support python 3.8)
• Allow upgrade without using origin - if not supported by charm - origin now has to be specified explicitly
• Charm upgrade does not check locally built ('local:app') charms
• When using upgrade-only, charms are not compared with charmstore versions, skipping straight to upgrade of services
• Improved wait on charm config change when setting origin
• Minor refactor/cleanup around

Added

• Support passing of --cacert $CACERT parameter in authentication using libjuju when accessing from remote machine
• Origin keys can be specified as parameter (key=value,key2=value2)
• Upgrade action name as parameters - defaulting to 'openstack-upgrade' in perform_upgrade
• Support key value parameters for upgrade action (key=value,key2=value2)
• Debug parameter - default log level without debug is INFO
• Async (class) methods mocking for unit-testing of jujuna code
• Tests for upgrade - perform_upgrade (covering simple, rolling and hacluster cases)

[matuskosut]

#14 included

2019-11-18 13:35:52,184 - jujuna.upgrade - INFO - Application upgrade order: keystone (10.0.3)
2019-11-18 13:35:52,272 - jujuna.upgrade - INFO - KEYSTONE - Begin rolling upgrade
...
2019-11-18 13:42:06,205 - jujuna.upgrade - INFO - KEYSTONE - Finish rolling upgrade
2019-11-18 13:42:08,228 - jujuna.upgrade - INFO - Application upgrade order: keystone (10.0.3=>11.0.4)

[matuskosut]

#34
We have the order documented in that script, also in the upgrade config.
It is also logged as in the messages above including versions.