This commit makes the openstack_blockstorage_volume resources better able
to handle volume creation errors upon resource creation. The cause of this
change is because there could be some storage backend error that happens
during storage provisioning that won't manifest in an "err" but will set
the volume's status to "error". We now check for a status of "error" and
propagate the error up the stack.
* provider/openstack: Detect Region for Importing Resources
This commit changes the way the OpenStack region is detected and set.
Any time a region is required, the region attribute will first be
checked. Next, the OS_REGION_NAME environment variable will be checked.
While schema.EnvDefaultFunc handles this same situation, it is not
applicable when importing resources.
* provider/openstack: No longer ignore region in importing tests
* provider/openstack: Network and Subnet Import Fixes
This commit fixes the OpenStack Network and Subnet resources so that
importing of those resources is successful.
