Replaced groups.ipaserver[0] by ansible_fqdn.

Since we are using docker for running the tests we can no longer rely on
groups.ipaserver[0] as the managed host hostname.

tests/hostgroup/test_hostgroup.yml

@@ -2,12 +2,12 @@
 - name: Test hostgroup
   hosts: ipaserver
   become: true
-  gather_facts: false
+  gather_facts: true
 
   tasks:
   - name: Get Domain from server name
     set_fact:
-      ipaserver_domain: "{{ groups.ipaserver[0].split('.')[1:] | join ('.') }}"
+      ipaserver_domain: "{{ ansible_fqdn.split('.')[1:] | join ('.') }}"
     when: ipaserver_domain is not defined
 
   - name: Ensure host-group databases, mysql-server and oracle-server are absent