Replace deprecated include with import_tasks and include_tasks

As the old way to include tasks is deprecated, replace static include
statements with import_tasks and dynamic ones with include_tasks.

Increaded the required ansible version to 2.5.0 to make sure that
include_tasks and import_tasks is working as expected.

Fixes issue #38

roles/ipareplica/tasks/install.yml

@@ -23,8 +23,7 @@
   when: not ipareplica_no_package_install | bool and ipareplica_setup_adtrust | bool
 
 - name: Install - Include Python2/3 import test
-  include: "{{role_path}}/tasks/python_2_3_test.yml"
-  static: yes
+  inport_tasks: "{{role_path}}/tasks/python_2_3_test.yml"
 
 - name: Install - Set default principal if no keytab is given
   set_fact:

roles/ipareplica/tasks/main.yml

@@ -10,9 +10,9 @@
     - "vars/default.yml"
 
 - name: Install IPA replica
-  include: tasks/install.yml
+  include_tasks: tasks/install.yml
   when: state|default('present') == 'present'
 
 - name: Uninstall IPA replica
-  include: tasks/uninstall.yml
+  include_tasks: tasks/uninstall.yml
   when: state|default('present') == 'absent'

roles/ipareplica/tasks/uninstall.yml

@@ -2,8 +2,7 @@
 # tasks to uninstall IPA replica
 
 #- name: Uninstall - Include Python2/3 import test
-#  include: "{{role_path}}/tasks/python_2_3_test.yml"
-#  static: yes
+#  import_tasks: "{{role_path}}/tasks/python_2_3_test.yml"
 
 - name: Uninstall - Uninstall IPA replica
   command: >