* lxd_container: support lxd instance types
Update the lxd_container module to enable the new LXD API endpoint,
which supports different types of instances, such as containers and virtual machines.
The type attributes can be set explicitly to create containers or virtual machines.
* lxd_container: rename references from containers to instances
* lxd_container: add an example of creating vms
* lxd_container: update doc
* lxd_container: fix pylint
* resolve converstation
* remove type from config
* remove outdated validation related to the instance api
* correct diff
* changing last bits
* add missing dot
