New IPADNSZone module

There is a new management module placed in the plugins folder:

    plugins/modules/ipadnszone.py

    The dnszone module allows to manage DNS zones.

    Here is the documentation for the module:

    README-dnszone.md

    New example playbooks have been added:

    playbooks/dnszone/disable-zone-forwarders.yml
    playbooks/dnszone/dnszone-absent.yml
    playbooks/dnszone/dnszone-all-params.yml
    playbooks/dnszone/dnszone-disable.yml
    playbooks/dnszone/dnszone-enable.yml
    playbooks/dnszone/dnszone-present.yml

    New tests for the module:

    tests/dnszone/test_dnszone.yml
    tests/dnszone/test_dnszone_mod.yml

README.md

@@ -12,6 +12,7 @@ Features
 * One-time-password (OTP) support for client installation
 * Repair mode for clients
 * Modules for dns forwarder management
+* Modules for dns zone management
 * Modules for group management
 * Modules for hbacrule management
 * Modules for hbacsvc management
@@ -410,6 +411,7 @@ Modules in plugin/modules
 
 * [ipadnsconfig](README-dnsconfig.md)
 * [ipadnsforwardzone](README-dnsforwardzone.md)
+* [ipadnszone](README-dnszone.md)
 * [ipagroup](README-group.md)
 * [ipahbacrule](README-hbacrule.md)
 * [ipahbacsvc](README-hbacsvc.md)
@@ -425,3 +427,5 @@ Modules in plugin/modules
 * [ipatopologysuffix](README-topology.md)
 * [ipauser](README-user.md)
 * [ipavault](README-vault.md)
+
+If you want to write a new module please read [writing a new module](plugins/modules/README.md).