Fix build matrix

Author: stephenrjohnson

.travis.yml

@@ -6,14 +6,10 @@ rvm:
 script: "bundle exec rake test"
 env:
   matrix:
-    include:
-      - rvm: 2.3.1
-        env: PUPPET_GEM_VERSION="< 4.0.0"
-      - rvm: 2.3.1
-        env: PUPPET_GEM_VERSION="< 4.0.0" FUTURE_PARSER="yes" STRICT_VARIABLES="no"
-      - rvm: 2.3.1
-        env: PUPPET_GEM_VERSION="< 4.0.0" FUTURE_PARSER="yes" STRICT_VARIABLES="yes"
-      - rvm: 1.9.3
-        env: PUPPET_GEM_VERSION="> 4.0.0
-      - rvm: 1.9.3
-        env: PUPPET_GEM_VERSION="> 4.0.0" STRICT_VARIABLES="yes"
+      exclude:
+        - rvm: 2.3.1
+          - PUPPET_GEM_VERSION="< 4.0.0"
+          - PUPPET_GEM_VERSION="< 4.0.0" FUTURE_PARSER="yes" STRICT_VARIABLES="no"
+          - PUPPET_GEM_VERSION="< 4.0.0" FUTURE_PARSER="yes" STRICT_VARIABLES="yes"
+    - PUPPET_GEM_VERSION="> 4.0.0"
+    - PUPPET_GEM_VERSION="> 4.0.0" STRICT_VARIABLES="yes"