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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'
```

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

##### 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

```

""" Ensure a given path ends with 'ansible_collections'
    :param collection_path: The path that should end in 'ansible_collections'
    :return: collection_path ending in 'ansible_collections' if it does not already.
    """
    if os.path.split(collection_path)[1] != 'ansible_collections':
        return os.path.join(collection_path, 'ansible_collections')
    return collection_path
def verify_collections(collections, search_paths, apis, validate_certs, ignore_errors):
    with _display_progress():
        with _tempdir() as b_temp_path:
            for collection in collections:
                try:
                    local_collection = None
                    b_collection = to_bytes(collection[0], errors='surrogate_or_strict')
                    if os.path.isfile(b_collection) or urlparse(collection[0]).scheme.lower() in ['http', 'https'] or len(collection[0].split('.')) != 2:
                        raise AnsibleError(message="'%s' is not a valid collection name. The format namespace.name is expected." % collection[0])
                    collection_name = collection[0]
                    namespace, name = collection_name.split('.')
                    collection_version = collection[1]
                    
                    for search_path in search_paths:
                        b_search_path = to_bytes(os.path.join(search_path, namespace, name), errors='surrogate_or_strict')