### Summary

With 22.04 right around the corner I've been testing some ansible on it to prepare for deploying 22.04 hosts. I've got everything worked out except for adding PPAs.

`apt_repository` is still adding the PPA keys to `/etc/apt/trusted.gpg` instead of placing individual key files in `/etc/apt/trusted.gpg.d/`.

`apt-add-repository` puts the individual key files in `/etc/apt/trusted.gpg.d`.

This move has been ongoing for many years with the previous behavior being deprecated and generating warnings.

### Issue Type

Bug Report

### Component Name

apt_repository

### Ansible Version

```console
$ ansible --version
ansible 2.10.8
  config file = None
  configured module search path = ['/home/wonko/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /usr/lib/python3/dist-packages/ansible
  executable location = /usr/bin/ansible
  python version = 3.10.4 (main, Apr  2 2022, 09:04:19) [GCC 11.2.0]
```


### Configuration

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


### OS / Environment

Ubuntu 22.04 (beta)

### Steps to Reproduce

<!--- Paste example playbooks or commands between quotes below -->
```yaml (paste below)
    - name: Add PPA
      apt_repository:
        repo: ppa:git-core/ppa
        state: present
```


### Expected Results

PPA is added to `/etc/apt/sources.list.d` and gpg key file to be place in `/etc/apt/trusted.gpg.d`

### Actual Results

```console
W: http://ppa.launchpad.net/git-core/ppa/ubuntu/dists/jammy/InRelease: Key is stored in legacy trusted.gpg keyring (/etc/apt/trusted.gpg), see the DEPRECATION section in apt-key(8) for details.
```


### Code of Conduct

- [X] I agree to follow the Ansible Code of Conduct
dumpstruct = {}
        for filename, sources in self.files.items():
            if sources:
                lines = []
                for n, valid, enabled, source, comment in sources:
                    chunks = []
                    if not enabled:
                        chunks.append('# ')
                    chunks.append(source)
                    if comment:
                        chunks.append(' # ')
                        chunks.append(comment)
                    chunks.append('\n')
                    lines.append(''.join(chunks))
                dumpstruct[filename] = ''.join(lines)
        return dumpstruct
    def _choice(self, new, old):
        if new is None:
            return old
        return new
    def modify(self, file, n, enabled=None, source=None, comment=None):
        '''
        This function to be used with iterator, so we don't care of invalid sources.
        If source, enabled, or comment is None, original value from line ``n`` will be preserved.
        '''
        valid, enabled_old, source_old, comment_old = self.files[file][n][1:]
        self.files[file][n] = (n, valid, self._choice(enabled, enabled_old), self._choice(source, source_old), self._choice(comment, comment_old))
    def _add_valid_source(self, source_new, comment_new, file):