##### 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

```

collection_found = False
        for path in collections_search_paths:
            collection_path = GalaxyCLI._resolve_path(path)
            if not os.path.exists(path):
                if path in default_collections_path:
                    
                    continue
                warnings.append("- the configured path {0} does not exist.".format(collection_path))
                continue
            if not os.path.isdir(collection_path):
                warnings.append("- the configured path {0}, exists, but it is not a directory.".format(collection_path))
                continue
            path_found = True
            if collection_name:
                
                validate_collection_name(collection_name)
                namespace, collection = collection_name.split('.')
                collection_path = validate_collection_path(collection_path)
                b_collection_path = to_bytes(os.path.join(collection_path, namespace, collection), errors='surrogate_or_strict')
                if not os.path.exists(b_collection_path):
                    warnings.append("- unable to find {0} in collection paths".format(collection_name))
                    continue
                if not os.path.isdir(collection_path):
                    warnings.append("- the configured path {0}, exists, but it is not a directory.".format(collection_path))
                    continue
                collection_found = True
                collection = CollectionRequirement.from_path(b_collection_path, False, fallback_metadata=True)
                fqcn_width, version_width = _get_collection_widths(collection)
                _display_header(collection_path, 'Collection', 'Version', fqcn_width, version_width)
                _display_collection(collection, fqcn_width, version_width)