##### 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 -->

''' prompt for connection and become passwords if needed '''
        op = context.CLIARGS
        sshpass = None
        becomepass = None
        become_prompt = ''
        become_prompt_method = "BECOME" if C.AGNOSTIC_BECOME_PROMPT else op['become_method'].upper()
        try:
            if op['ask_pass']:
                sshpass = getpass.getpass(prompt="SSH password: ")
                become_prompt = "%s password[defaults to SSH password]: " % become_prompt_method
            else:
                become_prompt = "%s password: " % become_prompt_method
            if op['become_ask_pass']:
                becomepass = getpass.getpass(prompt=become_prompt)
                if op['ask_pass'] and becomepass == '':
                    becomepass = sshpass
        except EOFError:
            pass
        
        
        if sshpass:
            sshpass = to_unsafe_text(sshpass)
        if becomepass:
            becomepass = to_unsafe_text(becomepass)
        return (sshpass, becomepass)
    def validate_conflicts(self, op, runas_opts=False, fork_opts=False):