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##### SUMMARY
<!--- Explain the problem briefly below -->
Since commit df581eb ovirt_vm is unable to find a template shared among multiple clusters in the same datacenter. Moreover, the document says that `cluster` parameter is a parameter used to define where VMs will be created. Then it should not be used to filter a template search which is not related to VM storage.

##### ISSUE TYPE
- Bug Report

##### COMPONENT NAME
<!--- Write the short name of the module, plugin, task or feature below, use your best guess if unsure -->
ovirt_vm

##### ANSIBLE VERSION
<!--- Paste verbatim output from "ansible --version" between quotes -->
```paste below
2.8.2
```

##### CONFIGURATION
<!--- Paste verbatim output from "ansible-config dump --only-changed" between quotes -->
```paste below

```

##### OS / ENVIRONMENT
<!--- Provide all relevant information below, e.g. target OS versions, network device firmware, etc. -->


##### STEPS TO REPRODUCE
<!--- Describe exactly how to reproduce the problem, using a minimal test-case -->
In RHEVM:
1. Create a cluster `cluster_a` and add a template `template_a` in this cluster
2. Create a cluster `cluster_b`

<!--- Paste example playbooks or commands between quotes below -->
```yaml

- name: Provision machine
  ovirt_vm:
    ...
    cluster: "cluster_b"
    template: "template_a"
    ...
```

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##### EXPECTED RESULTS
<!--- Describe what you expected to happen when running the steps above -->
The template should be found (Behaviour before commit df581eb)

##### ACTUAL RESULTS
<!--- Describe what actually happened. If possible run with extra verbosity (-vvvv) -->
It raises an error

<!--- Paste verbatim command output between quotes -->
```paste below
Template with name 'template_a' and version 'None' in cluster 'cluster_b' was not found
```

wait_condition=lambda vm: vm.status == otypes.VmStatus.SUSPENDED,
            )
        elif state == 'absent':
            ret = vms_module.remove()
        elif state == 'registered':
            storage_domains_service = connection.system_service().storage_domains_service()
            
            sd_id = get_id_by_name(storage_domains_service, module.params['storage_domain'])
            storage_domain_service = storage_domains_service.storage_domain_service(sd_id)
            vms_service = storage_domain_service.vms_service()
            
            vms = vms_service.list(unregistered=True)
            vm = next(
                (vm for vm in vms if (vm.id == module.params['id'] or vm.name == module.params['name'])),
                None
            )
            changed = False
            if vm is None:
                vm = vms_module.search_entity()
                if vm is None:
                    raise ValueError(
                        "VM '%s(%s)' wasn't found." % (module.params['name'], module.params['id'])
                    )
            else:
                
                changed = True
                vm_service = vms_service.vm_service(vm.id)
                vm_service.register(
                    allow_partial_import=module.params['allow_partial_import'],
                    cluster=otypes.Cluster(