This commit fixes and cleans up instance block_device configuration.
Reverts #5354 in that `volume_size` is only required in certain
block_device configuration combinations. Therefore, the actual
attribute must be set to Optional and later checks done.
Doc upates, too.
This commit adds the ability to create instances with multiple
ephemeral disks. The ephemeral disks will appear as local block
devices to the instance.
The `volume_size` of a `block_device` was originally set to Optional,
but it's a required parameter in the OpenStack/Nova API. While it's
possible to infer a default size of the block device, making it required
more closely matches the Nova CLI client as well as provides consistent
experience when working with multiple block_devices.
This commit adds the ability to associate a Floating IP to a specific
network. Previously, there only existed a top-level floating IP
attribute which was automatically associated with either the first
defined network or the default network (when no network block was
used).
Now floating IPs can be associated with networks beyond the first
defined network as well as each network being able to have their own
floating IP.
Specifying the floating IP by using the top-level floating_ip
attribute and the per-network floating IP attribute is not possible.
Additionally, an `access_network` attribute has been added in order
to easily specify which network should be used for provisioning.
This commit cleans up areas that configure the image_id and image_name.
It enables the ability to not have to specify an image_id or image_name
when booting from a volume.
It also prevents Terraform from reporting an error when an image name is no
longer able to be resolved from an image ID. This usually happens when the
image has been deleted, but there are still running instances that were based
off of it.
The image_id and image_name parameters no longer immediately take a default
value from the OS_IMAGE_ID and OS_IMAGE_NAME environment variables. If no other
resolution of an image_id or image_name were found, then these variables will
be referenced. This further supports booting from a volume.
Finally, documentation was updated to take into account booting from a volume.
This commit renames flavor_ref to flavor_id and adds the flavor_name
parameter. Users can now specify either a flavor ID or name when launching
instances.
