##### SUMMARY
ansible_run_tags documentation says the default is empty ("[]") at https://docs.ansible.com/ansible/latest/reference_appendices/config.html#tags-run

However when running a debug print with no tags specified, we get this output:

```
- name: print tags
  debug:
    msg: "{{ ansible_run_tags }}"
```

```
$ ansible-playbook deploy.yml
```

```

TASK [workstation : print tags] ************************************************************************************************************************************************************************************************************************************************************
task path: /home/gdevenyi/projects/lozano_ansible/roles/workstation/tasks/main.yml:4
ok: [192.168.56.104] => {
    "msg": [
        "all"
    ]
}

```

<!--- HINT: Did you know the documentation has an "Edit on GitHub" link on every page ? -->

##### ISSUE TYPE
- Documentation Report

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

##### ANSIBLE VERSION
<!--- Paste verbatim output from "ansible --version" between quotes -->
```paste below
2.9.9
```

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

```

##### OS / ENVIRONMENT
<!--- Provide all relevant information below, e.g. OS version, browser, etc. -->
Ubuntu 18.04
##### ADDITIONAL INFORMATION
<!--- Describe how this improves the documentation, e.g. before/after situation or screenshots -->

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

prompted_vault_secret.load()
                except AnsibleError as exc:
                    display.warning('Error in vault password prompt (%s): %s' % (vault_id_name, exc))
                    raise
                vault_secrets.append((built_vault_id, prompted_vault_secret))
                
                
                loader.set_vault_secrets(vault_secrets)
                continue
            
            display.vvvvv('Reading vault password file: %s' % vault_id_value)
            
            file_vault_secret = get_file_vault_secret(filename=vault_id_value,
                                                      vault_id=vault_id_name,
                                                      loader=loader)
            
            try:
                file_vault_secret.load()
            except AnsibleError as exc:
                display.warning('Error in vault password file loading (%s): %s' % (vault_id_name, to_text(exc)))
                raise
            if vault_id_name:
                vault_secrets.append((vault_id_name, file_vault_secret))
            else:
                vault_secrets.append((C.DEFAULT_VAULT_IDENTITY, file_vault_secret))
            
            loader.set_vault_secrets(vault_secrets)
        return vault_secrets
    @staticmethod
    def ask_passwords():