nova-compute charm should be able to enable or disable "inject_password"

[Craige McWhirter]

To enable the inject_password feature in nova-compute, we need the charm's action to set this option in /etc/nova/nova.conf:

[libvirt]
inject_password=true
inject_key=true

[Linda Guo (lihuiguo)]

actions shouldn't manipulate config files, that's a hook + config.yaml job.

[Linda Guo (lihuiguo)]

My intention is to add config option `inject-password` to the config.yaml that would allow user to inject admin/root password at nova instance boot time.
According to config reference [1]:

inject_password: If this option allows the injection of an admin password it depends on value greater or equal to -1 for inject_partition.

So to allow inject password, these options in /etc/nova/nova.conf:

[libvirt]
inject_password = True
inject_partition = -1

[1].https://docs.openstack.org/ocata/config-reference/compute/config-options.html

[Linda Guo (lihuiguo)]

fix proposed, review:

https://review.opendev.org/c/openstack/charm-nova-compute/+/765716