<!--- Verify first that your issue is not already reported on GitHub -->
<!--- Also test if the latest release and devel branch are affected too -->
<!--- Complete *all* sections as described, this form is processed automatically -->

##### SUMMARY
<!--- Explain the problem briefly below -->
I've talked about this with @gundalow in https://github.com/theforeman/foreman-ansible-modules/pull/591#issuecomment-561712408 but it seems to be forgotten.

`apt_repo` is for managing ALT Linux repositories, unlike `apt_repository` which is for Debian repositories. As we aim to only support Debian and Red Hat family OSes in "base", `apt_repo` should be moved to a collection.

##### ISSUE TYPE
- Bug Report

##### COMPONENT NAME
<!--- Write the short name of the module, plugin, task or feature below, use your best guess if unsure -->
apt_repo

##### ANSIBLE VERSION
<!--- Paste verbatim output from "ansible --version" between quotes -->
```paste below

```

##### CONFIGURATION
<!--- Paste verbatim output from "ansible-config dump --only-changed" between quotes -->
```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 -->

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

```

<!--- HINT: You can paste gist.github.com links for larger files -->

##### 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

```

choices: [ absent, present ]
    default: present
  remove_others:
    description:
      - Remove other then added repositories
      - Used if I(state=present)
    type: bool
    default: 'no'
  update:
    description:
      - Update the package database after changing repositories.
    type: bool
    default: 'no'
author:
- Mikhail Gordeev (@obirvalger)
'''
EXAMPLES = '''
- name: Remove all repositories
  apt_repo:
    repo: all
    state: absent
- name: Add repository `Sisysphus` and remove other repositories
  apt_repo:
    repo: Sisysphus
    state: present
    remove_others: yes
- name: Add local repository `/space/ALT/Sisyphus` and update package cache
  apt_repo:
    repo: copy:///space/ALT/Sisyphus
    state: present