##### 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

```

"""
        Install one or more roles(``ansible-galaxy role install``), or one or more collections(``ansible-galaxy collection install``).
        You can pass in a list (roles or collections) or use the file
        option listed below (these are mutually exclusive). If you pass in a list, it
        can be a name (which will be downloaded via the galaxy API and github), or it can be a local tar archive file.
        """
        install_items = context.CLIARGS['args']
        requirements_file = context.CLIARGS['requirements']
        collection_path = None
        if requirements_file:
            requirements_file = GalaxyCLI._resolve_path(requirements_file)
        two_type_warning = "The requirements file '%s' contains {0}s which will be ignored. To install these {0}s " \
                           "run 'ansible-galaxy {0} install -r' or to install both at the same time run " \
                           "'ansible-galaxy install -r' without a custom install path." % to_text(requirements_file)
        
        collection_requirements = []
        role_requirements = []
        if context.CLIARGS['type'] == 'collection':
            collection_path = GalaxyCLI._resolve_path(context.CLIARGS['collections_path'])
            requirements = self._require_one_of_collections_requirements(install_items, requirements_file)