Update tox.ini

tox.ini

@@ -1,22 +1,18 @@
 [tox]
 minversion = 1.8
-envlist = py{27}-ansible{23,24,25,26}
+envlist = py{27}-ansible{27,28}
 skipsdist = true
 
 [travis:env]
 ANSIBLE=
-  2.3: ansible23
-  2.4: ansible24
-  2.5: ansible25
-  2.6: ansible26
+  2.7: ansible27
+  2.8: ansible28
 
 [testenv]
 passenv = *
 deps =
     -rtest-requirements.txt
-    ansible23: ansible<2.4
-    ansible24: ansible<2.5
-    ansible25: ansible<2.6
-    ansible26: ansible<2.7
+    ansible27: ansible<2.8
+    ansible28: ansible<2.9
 commands =
     {posargs:molecule test --all --destroy always}