Use Python2/3 to detect ansible_python_interpreter

With the test it is not needed to pin down the python interpreter for ansible
modules. It is therefore possible to use a Python2 version on Fedora-27 and
a Python3 version on Fedora-26.

roles/ipaclient/tasks/install.yml

@@ -7,6 +7,10 @@
     state: present
   with_items: "{{ ipaclient_packages }}"
 
+- name: Install - Include Python2/3 import test
+  include: "{{role_path}}/tasks/python_2_3_test.yml"
+  static: yes
+
 - name: Install - IPA discovery
   ipadiscovery:
     domain: "{{ ipaclient_domain | default(omit) }}"