### Summary

I'm trying to optimise my builds by avoiding unnecessary downloads.
ansible-galaxy install always downloads the latest version even if the existing collection already meets the requirements. This behaviour appears to be consistent with the documentation (https://docs.ansible.com/ansible/latest/galaxy/user_guide.html#installing-an-older-version-of-a-collection), but why has it been implemented to always download ?


e.g. I have
```
# /usr/local/lib/python3.8/site-packages/ansible_collections
Collection                    Version
----------------------------- -------
amazon.aws                    3.5.0  
...
```
and requirements.yml
```
---
collections:
  - name: amazon.aws
    version: '>=1.5.0'
```
if I run ansible-galaxy install -r requirements.yml I get amazon.aws 6.1.0 installed, even though 3.5.0 already meets my 1.5.0 requirement. I would expect nothing to happen because my requirements were already met.

### Issue Type

Feature Idea

### Component Name

ansible galaxy

### Additional Information

People who like the existing behaviour could perhaps use the recently added --upgrade switch to continue to get the upgrade to the lastest version.

### Code of Conduct

- [X] I agree to follow the Ansible Code of Conduct
default_roles_path = C.config.get_configuration_definition('DEFAULT_ROLES_PATH').get('default', '')
        roles_path = opt_help.ArgumentParser(add_help=False)
        roles_path.add_argument('-p', '--roles-path', dest='roles_path', type=opt_help.unfrack_path(pathsep=True),
                                default=C.DEFAULT_ROLES_PATH, action=opt_help.PrependListAction,
                                help='The path to the directory containing your roles. The default is the first '
                                     'writable one configured via DEFAULT_ROLES_PATH: %s ' % default_roles_path)
        collections_path = opt_help.ArgumentParser(add_help=False)
        collections_path.add_argument('-p', '--collections-path', dest='collections_path', type=opt_help.unfrack_path(pathsep=True),
                                      action=opt_help.PrependListAction,
                                      help="One or more directories to search for collections in addition "
                                      "to the default COLLECTIONS_PATHS. Separate multiple paths "
                                      "with '{0}'.".format(os.path.pathsep))
        cache_options = opt_help.ArgumentParser(add_help=False)
        cache_options.add_argument('--clear-response-cache', dest='clear_response_cache', action='store_true',
                                   default=False, help='Clear the existing server response cache.')
        cache_options.add_argument('--no-cache', dest='no_cache', action='store_true', default=False,
                                   help='Do not use the server response cache.')
        
        type_parser = self.parser.add_subparsers(metavar='TYPE', dest='type')
        type_parser.required = True
        
        collection = type_parser.add_parser('collection', help='Manage an Ansible Galaxy collection.')
        collection_parser = collection.add_subparsers(metavar='COLLECTION_ACTION', dest='action')
        collection_parser.required = True
        self.add_download_options(collection_parser, parents=[common, cache_options])
        self.add_init_options(collection_parser, parents=[common, force])
        self.add_build_options(collection_parser, parents=[common, force])
        self.add_publish_options(collection_parser, parents=[common])
        self.add_install_options(collection_parser, parents=[common, force, cache_options])
        self.add_list_options(collection_parser, parents=[common, collections_path])