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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
```

suboptions:
            source_network_name:
                description:
                    - The network name of the source network.
            source_profile_name:
                description:
                    - The profile name related to the source network.
            target_profile_id:
                description:
                    - The id of the target profile id to be mapped to in the engine.
        version_added: "2.5"
    cluster_mappings:
        description:
            - "Mapper which maps cluster name between VM's OVF and the destination cluster this VM should be registered to,
               relevant when C(state) is registered.
               Cluster mapping is described by the following dictionary:"
        suboptions:
            source_name:
                description:
                    - The name of the source cluster.
            dest_name:
                description:
                    - The name of the destination cluster.
        version_added: "2.5"
    role_mappings:
        description:
            - "Mapper which maps role name between VM's OVF and the destination role this VM should be registered to,
               relevant when C(state) is registered.
               Role mapping is described by the following dictionary:"
        suboptions: