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<!--- Also test if the latest release and devel branch are affected too -->
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##### SUMMARY
<!--- Explain the problem briefly below -->
We publish semver collection (vyos.vyos:0.0.1-dev58) to ansible galaxy, however by default it seems ansible-galaxy client will not be able to find it. You must specific the version number directly to fetch it.

https://galaxy.ansible.com/vyos/vyos


EDIT:

This is working as expect, but it would be nice to Include:

   --pre                       Include pre-release and development versions. By default, ansible-galaxy only finds stable versions.

##### ISSUE TYPE
- Bug Report

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

##### ANSIBLE VERSION
<!--- Paste verbatim output from "ansible --version" between quotes -->
```paste below
ansible 2.9.1
```

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

```


##### STEPS TO REPRODUCE
<!--- Describe exactly how to reproduce the problem, using a minimal test-case -->

<!--- Paste example playbooks or commands between quotes below -->
```yaml
$ ansible-galaxy collection install vyos.vyos -p /tmp/11123
[WARNING]: The specified collections path '/tmp/11123' is not part of the configured Ansible collections paths '/home/pabelanger/.ansible/collections:/usr/share/ansible/collections'. The
installed collection won't be picked up in an Ansible run.

Process install dependency map
ERROR! Cannot meet requirement * for dependency vyos.vyos from source 'https://galaxy.ansible.com/api/'. Available versions before last requirement added: 
Requirements from:
	base - 'vyos.vyos:*'
(venv) [pabelanger@localhost openstack]$ ansible-galaxy collection install vyos.vyos:0.0.1-dev57 -p /tmp/11123
[WARNING]: The specified collections path '/tmp/11123' is not part of the configured Ansible collections paths '/home/pabelanger/.ansible/collections:/usr/share/ansible/collections'. The
installed collection won't be picked up in an Ansible run.

Process install dependency map
Starting collection install process
Installing 'vyos.vyos:0.0.1-dev57' to '/tmp/11123/ansible_collections/vyos/vyos'
```

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##### EXPECTED RESULTS
<!--- Describe what you expected to happen when running the steps above -->
vyos.vyos collection to be found and installed

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

<!--- Paste verbatim command output between quotes -->
```paste below

```

_FILE_MAPPING = [(b'MANIFEST.json', 'manifest_file'), (b'FILES.json', 'files_file')]
    def __init__(self, namespace, name, b_path, api, versions, requirement, force, parent=None, metadata=None,
                 files=None, skip=False):
        """
        Represents a collection requirement, the versions that are available to be installed as well as any
        dependencies the collection has.
        :param namespace: The collection namespace.
        :param name: The collection name.
        :param b_path: Byte str of the path to the collection tarball if it has already been downloaded.
        :param api: The GalaxyAPI to use if the collection is from Galaxy.
        :param versions: A list of versions of the collection that are available.
        :param requirement: The version requirement string used to verify the list of versions fit the requirements.
        :param force: Whether the force flag applied to the collection.
        :param parent: The name of the parent the collection is a dependency of.
        :param metadata: The galaxy.api.CollectionVersionMetadata that has already been retrieved from the Galaxy
            server.
        :param files: The files that exist inside the collection. This is based on the FILES.json file inside the
            collection artifact.
        :param skip: Whether to skip installing the collection. Should be set if the collection is already installed
            and force is not set.
        """
        self.namespace = namespace
        self.name = name
        self.b_path = b_path
        self.api = api
        self.versions = set(versions)
        self.force = force