* Add support to start a vm and put it on hold in one_vm
* Add version_added to vm_start_on_hold option for one_vm
* Add version_added to vm_start_on_hold option for one_vm#2
* Add version_added to vm_start_on_hold option for one_vm#3
* Fix indentation for one_vm
OpenNebula 5.5.8 expects int in DISK_SIZE field when you create a vm, not a float.
For example, "42 GB" should be sent to OpenNebula API as "43088", not as "43088.0". MEMORY you cast to int explicitly, but DISK_SIZE not.
Add `mode` option which sets permission mode of a VM in octet format
Add `owner_id` and `group_id` which set the ownership of a VM
Move the waiting for state at the end of the module, so it could fail faster if there is some error
tagged_instances will only be returned only if count_attributes and/or count_labels are used, as specified in the documentation
Update relevant tests
Add tests for mode, owner_id, group_id
* Add OpenNebula one_image_facts module
`one_image_facts` - module for gathering facts about OpenNebula images
Add integration tests
* Add an alias for ids
