Adds utf-8 encoding to f5 module_utils

Show module name and args with -vvv

This information was earlier shown only with ANSIBLE_DEBUG, but it's
extremely useful in a user context, especially with module invocations
with deeply nested args like the ec2_vpc/ec2 modules.

Closes #11680

Fixes #12155

Changelog tweak: Mention --output - for ansible-vault encrypt/decrypt

Fix setting dns_name in cobbler inventory

Fixes #12081

Add Nagios NDO inventory plugin

The contributor's name on line 10 (originally line 7) includes a character
that the default Python encoding (ASCII) raises an error on when interpreting
the file.

Specifying the utf-8 encoding, as is done in other modules, resolves
the error.

The error being raised is

SyntaxError: Non-ASCII character '\xc3' in file /.../lib/ansible/module_utils/f5.py
on line 7, but no encoding declared; see http://www.python.org/peps/pep-0263.html
for details

Fixes #12154

Make combine_vars() compatible with Python 3

Fixes

  TypeError: unsupported operand type(s) for +: 'dict_items' and 'dict_items'

on Python 3.

Fixes #12147

moved WinRM setup script test after config

Rebase of 10204 - Add host key for ssh url only.

Rewrite function `get_fqdn`.  It returns fqdn for all kinds of urls now.

`add_git_host_key` determines whether a url is ssh and whether its host
key should be added.

Fixes #11891

Change hacking scripts to python3 syntax

Fixed Spelling Error on Line 67

Fixes #12145