##### SUMMARY
`ansible-base collection list` doesn't show the packages installed by the new `ansible` package

As a workaround, you need to do:

```
COLLECTION_INSTALL=$(python -c 'import ansible, os.path ; print("%s/../ansible_collections" % os.path.dirname(ansible.__file__))')
ansible-galaxy collection list -p "$COLLECTION_INSTALL"
```

##### ISSUE TYPE
- Bug Report

##### COMPONENT NAME
ansible-galaxy

##### ANSIBLE VERSION
```paste below
2.10 beta1
```

##### CONFIGURATION
```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 -->

1. Install Ansible 2.10.0a1
  https://pypi.python.org/packages/source/a/ansible/ansible-2.10.0a1.tar.gz

2. `ansible-galaxy collection list`

##### EXPECTED RESULTS
<!--- Describe what you expected to happen when running the steps above -->


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

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

```

if collections and requirements_file:
            raise AnsibleError("The positional collection_name arg and --requirements-file are mutually exclusive.")
        elif not collections and not requirements_file:
            raise AnsibleError("You must specify a collection name or a requirements file.")
        elif requirements_file:
            requirements_file = GalaxyCLI._resolve_path(requirements_file)
            requirements = self._parse_requirements_file(requirements_file, allow_old_format=False)
        else:
            requirements = {'collections': [], 'roles': []}
            for collection_input in collections:
                requirement = None
                if os.path.isfile(to_bytes(collection_input, errors='surrogate_or_strict')) or \
                        urlparse(collection_input).scheme.lower() in ['http', 'https'] or \
                        collection_input.startswith(('git+', 'git@')):
                    
                    name = collection_input
                else:
                    name, dummy, requirement = collection_input.partition(':')
                requirements['collections'].append((name, requirement or '*', None, None))
        return requirements
    
    
    
    def execute_role(self):