New model manageiq manageiq user (#26641)

* ManageIQ: manageiq_user module, module utils and doc_fragment

ManageIQ is an open source management platform for Hybrid IT.

This change is adding:
- manageiq_user module, responsible for user management in ManageIQ
- manageiq utils
- manageiq doc_fragment

* Handle import error

* Use formatting options

* group parameter is required

* changed doesn't need to be an attribute

* resource dictionary should contain values which isn't None

* move from monitoring to remote-management

* Use ManageIQ nameing convention

* Do not set defauts in arguments

* Use idempotent state parameter instead of action

* Check import error in the manageiq util class

* Update the miq documentation

* rename the connection configuration from miq to manageiq_connection

* All messeges start with non cap, fix typos, add examples, rename vars

* more typos fixes

* Make sure we insert only strings to logs by using % formating

* use suboptions keyword for the manageiq connection

* do not log the managiq connection struct (it include sensitive information like username and password)

* add missing from __future__

* ahh, wrong no-log line

* Use sub options

docs/docsite/rst/dev_guide/developing_module_utilities.rst

@@ -29,6 +29,7 @@ The following is a list of module_utils files and a general description. The mod
 - ismount.py - Contains single helper function that fixes os.path.ismount
 - junos.py -  Definitions and helper functions for modules that manage Junos networking devices
 - known_hosts.py - utilities for working with known_hosts file
+- manageiq.py - Functions and utilities for modules that work with ManageIQ platform and its resources.
 - mysql.py - Allows modules to connect to a MySQL instance
 - netapp.py - Functions and utilities for modules that work with the NetApp storage platforms.
 - netcfg.py - Configuration utility functions for use by networking modules