### Summary

If a galaxy requirements file contains collections that have signatures defined, then `ansible-galaxy role install` with that requirements file fails because a keyring is not supplied.

### Issue Type

Bug Report

### Component Name

ansible-galaxy

### Ansible Version

```console
$ ansible --version

ansible [core 2.13.0.dev0] (devel ff184b0815) last updated 2022/03/24 16:21:31 (GMT -400)
  config file = /home/shrews/.ansible.cfg
  configured module search path = ['/home/shrews/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /home/shrews/Devel/github/Shrews/ansible/lib/ansible
  ansible collection location = /home/shrews/.ansible/collections:/usr/share/ansible/collections
  executable location = /home/shrews/Devel/github/Shrews/ansible/bin/ansible
  python version = 3.9.7 (default, Sep 10 2021, 14:59:43) [GCC 11.2.0]
  jinja version = 3.1.0
  libyaml = True
```


### Configuration

```console
$ ansible-config dump --only-changed

DEFAULT_HOST_LIST(/home/shrews/.ansible.cfg) = ['/home/shrews/Devel/ansible/hosts.yaml']
```


### OS / Environment

Ubuntu 21.10

### Steps to Reproduce

<!--- Paste example playbooks or commands between quotes below -->
```yaml (paste below)

$ cat req.yml 
collections:
  - name: community.mysql
    signatures:
      - file:///home/shrews/test.asc

$ ansible-galaxy role install -r req.yml 
ERROR! Signatures were provided to verify community.mysql but no keyring was configured.
```


### Expected Results

`role install` should ignore collection signatures

### Actual Results

```console
$ ansible-galaxy role install -r req.yml -vvvv

ansible-galaxy [core 2.13.0.dev0] (devel ff184b0815) last updated 2022/03/24 16:21:31 (GMT -400)
  config file = /home/shrews/.ansible.cfg
  configured module search path = ['/home/shrews/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /home/shrews/Devel/github/Shrews/ansible/lib/ansible
  ansible collection location = /home/shrews/.ansible/collections:/usr/share/ansible/collections
  executable location = /home/shrews/Devel/github/Shrews/ansible/bin/ansible-galaxy
  python version = 3.9.7 (default, Sep 10 2021, 14:59:43) [GCC 11.2.0]
  jinja version = 3.1.0
  libyaml = True
Using /home/shrews/.ansible.cfg as config file
Reading requirement file at '/home/shrews/req.yml'
ERROR! Signatures were provided to verify community.mysql but no keyring was configured.
```


### Code of Conduct

- [X] I agree to follow the Ansible Code of Conduct
)
        if req_type is None:
            if _is_git_url(src_path):
                req_type = 'git'
                req_source = src_path
            elif _is_http_url(src_path):
                req_type = 'url'
                req_source = src_path
            elif _is_file_path(src_path):
                req_type = 'file'
                req_source = src_path
            elif _is_collection_dir(src_path):
                if _is_installed_collection_dir(src_path) and _is_collection_src_dir(src_path):
                    # 
                    # 
                    # 
                    raise AnsibleError(
                        u"Collection requirement at '{path!s}' has both a {manifest_json!s} "
                        u"file and a {galaxy_yml!s}.\nThe requirement must either be an installed "
                        u"collection directory or a source collection directory, not both.".
                        format(
                            path=to_text(src_path, errors='surrogate_or_strict'),
                            manifest_json=to_text(_MANIFEST_JSON),
                            galaxy_yml=to_text(_GALAXY_YAML),
                        )
                    )
                req_type = 'dir'
                req_source = src_path
            elif _is_collection_namespace_dir(src_path):
                req_name = None  #