### 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
mock_display = MagicMock()
    monkeypatch.setattr(Display, 'display', mock_display)
    collection_tar = collection_artifact[1]
    temp_path = os.path.join(os.path.split(collection_tar)[0], b'temp')
    os.makedirs(temp_path)
    concrete_artifact_cm = collection.concrete_artifact_manager.ConcreteArtifactsManager(temp_path, validate_certs=False)
    output_path = os.path.join(os.path.split(collection_tar)[0])
    collection_path = os.path.join(output_path, b'ansible_namespace', b'collection')
    os.makedirs(os.path.join(collection_path, b'delete_me'))  # Create a folder to verify the install cleans out the dir
    candidate = Candidate('ansible_namespace.collection', '0.1.0', to_text(collection_tar), 'file', None)
    collection.install(candidate, to_text(output_path), concrete_artifact_cm)
    # Ensure the temp directory is empty, nothing is left behind
    assert os.listdir(temp_path) == []
    actual_files = os.listdir(collection_path)
    actual_files.sort()
    assert actual_files == [b'FILES.json', b'MANIFEST.json', b'README.md', b'docs', b'playbooks', b'plugins', b'roles',
                            b'runme.sh']
    assert stat.S_IMODE(os.stat(os.path.join(collection_path, b'plugins')).st_mode) == 0o0755
    assert stat.S_IMODE(os.stat(os.path.join(collection_path, b'README.md')).st_mode) == 0o0644
    assert stat.S_IMODE(os.stat(os.path.join(collection_path, b'runme.sh')).st_mode) == 0o0755
    assert mock_display.call_count == 2
    assert mock_display.mock_calls[0][1][0] == "Installing 'ansible_namespace.collection:0.1.0' to '%s'" \
        % to_text(collection_path)
    assert mock_display.mock_calls[1][1][0] == "ansible_namespace.collection:0.1.0 was installed successfully"
def test_install_collection_with_download(galaxy_server, collection_artifact, monkeypatch):