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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"
    ...
```

<!--- HINT: You can paste gist.github.com links for larger files -->

##### 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
```

vm_service = self._service.vm_service(entity.id)
        self.__suspend_shutdown_common(vm_service)
        if entity.status in [otypes.VmStatus.PAUSED, otypes.VmStatus.DOWN]:
            vm_service.start()
            self._wait_for_UP(vm_service)
        return vm_service.get()
    def _post_start_action(self, entity):
        vm_service = self._service.service(entity.id)
        self._wait_for_UP(vm_service)
        self._attach_cd(vm_service.get())
    def _attach_cd(self, entity):
        cd_iso = self.param('cd_iso')
        if cd_iso is not None:
            vm_service = self._service.service(entity.id)
            current = vm_service.get().status == otypes.VmStatus.UP and self.param('state') == 'running'
            cdroms_service = vm_service.cdroms_service()
            cdrom_device = cdroms_service.list()[0]
            cdrom_service = cdroms_service.cdrom_service(cdrom_device.id)
            cdrom = cdrom_service.get(current=current)
            if getattr(cdrom.file, 'id', '') != cd_iso:
                if not self._module.check_mode:
                    cdrom_service.update(
                        cdrom=otypes.Cdrom(
                            file=otypes.File(id=cd_iso)
                        ),
                        current=current,
                    )
                self.changed = True
        return entity
    def _migrate_vm(self, entity):