Updates to testing matrix

Author: WhatsARanjit

.travis.yml

@@ -1,36 +1,38 @@
 language: ruby
-env:
-  - PUPPET_VERSION=4.7.0
-  - PUPPET_VERSION=4.7.0
-  - PUPPET_VERSION=4.6.2
-  - PUPPET_VERSION=4.6.1
-  - PUPPET_VERSION=4.5.2
-  - PUPPET_VERSION=4.5.2
-  - PUPPET_VERSION=4.5.1
-  - PUPPET_VERSION=4.5.0
-  - PUPPET_VERSION=4.4.2
-  - PUPPET_VERSION=4.4.1
-  - PUPPET_VERSION=4.4.0
-  - PUPPET_VERSION=4.3.2
-  - PUPPET_VERSION=4.3.2
-  - PUPPET_VERSION=4.3.2
-  - PUPPET_VERSION=4.3.1
-  - PUPPET_VERSION=4.3.1
-  - PUPPET_VERSION=4.3.0
-  - PUPPET_VERSION=4.2.3
-  - PUPPET_VERSION=4.2.2
-  - PUPPET_VERSION=4.2.2
-  - PUPPET_VERSION=4.2.2
-  - PUPPET_VERSION=4.2.1
-  - PUPPET_VERSION=4.2.0
-  - PUPPET_VERSION=4.2.0
-  - PUPPET_VERSION=4.1.0
-  - PUPPET_VERSION=4.0.0
-  - PUPPET_VERSION=3.8.1
-  - PUPPET_VERSION=3.7.0
-rvm:
-  - 2.2.0
-  - 2.1.0
-  - 2.0.0
+matrix:
+  include:
+  # 2017.3.1
+  - rvm: 2.4.1
+    env: PUPPET_VERSION=5.3.1
+  # 2017.2.4
+  - rvm: 2.1.9
+    env: PUPPET_VERSION=4.10.8
+  # 2017.1.0
+  - rvm: 2.1.9
+    env: PUPPET_VERSION=4.9.4
+  # 2016.5.2
+  - rvm: 2.1.9
+    env: PUPPET_VERSION=4.8.2
+  # 2016.4.7
+  - rvm: 2.1.9
+    env: PUPPET_VERSION=4.10.5
+  # 2016.2.1
+  - rvm: 2.1.9
+    env: PUPPET_VERSION=4.5.2
+  # 2016.1.2
+  - rvm: 2.1.9
+    env: PUPPET_VERSION=4.4.2
+  # 2015.3.3
+  - rvm: 2.1.8
+    env: PUPPET_VERSION=4.3.2
+  # 2015.2.3
+  - rvm: 2.1.7
+    env: PUPPET_VERSION=4.2.3
+  # 3.8.6
+  - rvm: 2.1.7
+    env: PUPPET_VERSION=3.8.6
+  # 3.7.1
+  - rvm: 2.1.7
+    env: PUPPET_VERSION=3.7.1
 script:
   - "bundle exec rake spec"