##### 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 -->

"""Parse the command line args
        This method parses the command line arguments.  It uses the parser
        stored in the self.parser attribute and saves the args and options in
        context.CLIARGS.
        Subclasses need to implement two helper methods, init_parser() and post_process_args() which
        are called from this function before and after parsing the arguments.
        """
        self.init_parser()
        if HAS_ARGCOMPLETE:
            argcomplete.autocomplete(self.parser)
        try:
            options = self.parser.parse_args(self.args[1:])
        except SystemExit as e:
            if(e.code != 0):
                self.parser.exit(status=2, message=" \n%s " % self.parser.format_help())
            raise
        options = self.post_process_args(options)
        context._init_global_context(options)
    @staticmethod
    def version_info(gitinfo=False):