tox.ini: test using ansible 2.3.0.

Author: steenzout

tox.ini

@@ -1,13 +1,14 @@
 [tox]
 envlist =
-    py{27}-ansible{22,21,20}
+    py{27}-ansible{23,22,21,20}
 
 skipsdist = True
 
 
 [testenv]
 changedir = tests
 deps =
+    ansible23: ansible>=2.3,<2.4
     ansible22: ansible>=2.2,<2.3
     ansible21: ansible>=2.1,<2.2
     ansible20: ansible>=2.0.0,<2.1