OpenStack flavor key in kargo.yml is not honored.

[galstrom21]

kargo openstack does not honor the flavor key in kargo.yml (https://github.com/kubespray/kargo-cli/blob/master/src/kargo/files/kargo.yml#L51).

Using this configuration in kargo.yml

# OpenStack options
# ---
os_auth_url: "<os_auth_url>"
os_username: "<os_username>"
os_password: "<os_password>
os_project_name: "<os_project_name>"
flavor: "performance1-4"
image: "1d3ea64f-1ead-4042-8cb6-8ceb523b6149"
# network: "<os_network_name_or_id>"
sshkey: "<os_ssh_key_name>"

I am getting the following error:

$ kargo openstack --nodes 3 --etcds 3 --config ~/.config/kargo/kargo.yml
 [WARNING]: A directory ~/.kargo already exists

Are you sure to overwrite it ? [Y/n] y

CLONING KARGO GIT REPO *********************************************************
Cloning into '~/.kargo'...
kargo repo cloned
Traceback (most recent call last):
  File "~/.virtualenvs/kargo/bin/kargo", line 381, in <module>
    args.func(config)
  File "~/.virtualenvs/kargo/bin/kargo", line 65, in openstack
    O.gen_openstack_playbook()
  File "~/.virtualenvs/kargo/lib/python2.7/site-packages/kargo/cloud.py", line 366, in gen_openstack_playbook
    'flavor': self.options['%s_flavor' % role],
KeyError: 'nodes_flavor'

Specifying masters_flavor and nodes_flavor and etcds_flavor in kargo.yml resolves the issue.