* Update openstack inventory script to keep basic functionality (#43432)
re-applies commit 6667ec4474 which
fixed the plugin to the script so that it will work with current
ansible-inventory.
Also redirect stdout before dumping the ouptput, because not doing
so will cause JSON parse errors in some cases.
(cherry picked from commit fa45c44026)
* fixed the plugin to the script so that it will work with current
The shift to openstacksdk left us with a bug in that when running bare
with --list, the cloud argument to get_one is None. We just need _one_
of the clouds to pull the cache settings, since they are global (yet,
we'll go back and fix this in sdk)
If it's None, just use get_all and grab the first one.
* Establish connection through openstacksdk
* Switch from shade to openstacksdk
* fix typo in link to openstacksdk
* remove nova_client usage
* further remove of min_version from openstack modules
