New idoverridegroup management module.

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

    plugins/modules/ipaidoverridegroup.py

The idoverridegroup module allows to ensure presence and absence of
idoverrides for groups.

Here is the documentation for the module:

    README-idoverridegroup.md

New example playbooks have been added:

    playbooks/idoverridegroup/idoverridegroup-absent.yml
    playbooks/idoverridegroup/idoverridegroup-present.yml

New tests for the module can be found at:

    tests/idoverridegroup/test_idoverridegroup.yml
    tests/idoverridegroup/test_idoverridegroup_client_context.yml

playbooks/idoverridegroup/idoverridegroup-absent.yml

@@ -0,0 +1,13 @@
+---
+- name: Playbook to manage idoverridegroup
+  hosts: ipaserver
+  become: no
+
+  tasks:
+  - name: Ensure idoverridegroup test_group is absent in idview test_idview.
+    ipaidoverridegroup:
+      ipaadmin_password: SomeADMINpassword
+      idview: test_idview
+      anchor: test_group
+      continue: true
+      state: absent

playbooks/idoverridegroup/idoverridegroup-present.yml

@@ -0,0 +1,11 @@
+---
+- name: Playbook to manage idoverridegroup
+  hosts: ipaserver
+  become: no
+
+  tasks:
+  - name: Ensure idoverridegroup test_group is present in idview test_idview.
+    ipaidoverridegroup:
+      ipaadmin_password: SomeADMINpassword
+      idview: test_idview
+      anchor: test_group