Add support for parameter rename on ipahostgroup.

FreeIPA 4.8.7 introduced an option to rename an existing hostgroup.
This patch adds support for renaming hostgroups if the option is
available on installed IPA version.

A new state `renamed` and a new option `rename` (alias: `new_name`)
was added to module `ipahostgroup` to allow renaming of host groups.

The implemented behavior is:
* Rename if `name` exists and `rename` doesn't.
* Do nothing if `name` does not exist and `rename` does, or if
  `name` equals to `rename`. (result.changed is False)
* Fail if neither or both `name` and `rename` exist.

playbooks/hostgroup/rename-hostgroup.yml

@@ -0,0 +1,12 @@
+---
+- name: Playbook to handle hostgroups
+  hosts: ipaserver
+  become: yes
+
+  tasks:
+  - name : Rename host-group from `databases` to `datalake`
+    ipahostgroup:
+      ipaadmin_password: SomeADMINpassword
+      name: databases
+      rename: datalake
+      state: renamed