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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
```

lun_mappings:
        description:
            - "Mapper which maps lun between VM's OVF and the destination lun this VM should contain, relevant when C(state) is registered.
               lun_mappings is described by the following dictionary:
               - C(logical_unit_id): The logical unit number to identify a logical unit,
               - C(logical_unit_port): The port being used to connect with the LUN disk.
               - C(logical_unit_portal): The portal being used to connect with the LUN disk.
               - C(logical_unit_address): The address of the block storage host.
               - C(logical_unit_target): The iSCSI specification located on an iSCSI server
               - C(logical_unit_username): Username to be used to connect to the block storage host.
               - C(logical_unit_password): Password to be used to connect to the block storage host.
               - C(storage_type): The storage type which the LUN reside on (iscsi or fcp)"
        version_added: "2.5"
    reassign_bad_macs:
        description:
            - "Boolean indication whether to reassign bad macs when C(state) is registered."
        type: bool
        version_added: "2.5"
    template:
        description:
            - Name of the template, which should be used to create Virtual Machine.
            - Required if creating VM.
            - If template is not specified and VM doesn't exist, VM will be created from I(Blank) template.
    template_version:
        description:
            - Version number of the template to be used for VM.
            - By default the latest available version of the template is used.
        version_added: "2.3"
    use_latest_template_version:
        description: