<!--- Verify first that your feature was not already discussed on GitHub -->
<!--- Complete *all* sections as described, this form is processed automatically -->

##### SUMMARY
<!--- Describe the new feature/improvement briefly below -->
The ios_banner currently strips any text passed to it, making certain banner formats impossible to replicate properly.

##### ISSUE TYPE
- Feature Idea

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

##### ADDITIONAL INFORMATION
<!--- Describe how the feature would be used, why it is needed and what it would solve -->
Add a boolean switch to the module params (`strip`, perhaps) that would conditionally strip or not the text passed from the param. Could be optional and default to `True`.

<!--- Paste example playbooks or commands between quotes below -->
```yaml
ios_banner:
  strip: no
  banner: login
  present: yes
  text: "{{ lookup('template', 'banner.j2') }}"
```
with the `banner.j2` looking like
```
            WARNING
This is a private system if you
do not belong here, bugger off
or something.
```
<!--- HINT: You can also paste gist.github.com links for larger files -->

""" main entry point for module execution
    """
    argument_spec = dict(
        banner=dict(required=True, choices=['login', 'motd', 'exec', 'incoming', 'slip-ppp']),
        text=dict(),
        state=dict(default='present', choices=['present', 'absent'])
    )
    argument_spec.update(ios_argument_spec)
    required_if = [('state', 'present', ('text',))]
    module = AnsibleModule(argument_spec=argument_spec,
                           required_if=required_if,
                           supports_check_mode=True)
    warnings = list()
    result = {'changed': False}
    if warnings:
        result['warnings'] = warnings
    want = map_params_to_obj(module)
    have = map_config_to_obj(module)
    commands = map_obj_to_commands((want, have), module)
    result['commands'] = commands
    if commands:
        if not module.check_mode:
            load_config(module, commands)
        result['changed'] = True
    module.exit_json(**result)
if __name__ == '__main__':
    main()