update .travis file

Author: tphoney

.travis.yml

@@ -1,4 +1,5 @@
 ---
+dist: xenial
 language: ruby
 cache: bundler
 before_install:
@@ -11,18 +12,22 @@ script:
   - 'bundle exec rake $CHECK'
 bundler_args: --without system_tests
 rvm:
-  - 2.5.1
-env:
-  global:
-    - PUPPET_GEM_VERSION="~> 6.0"
+  - 2.5.3
+stages:
+  - static
+  - spec
+  - acceptance
+  -
+    if: tag =~ ^v\d
+    name: deploy
 matrix:
   fast_finish: true
   include:
     -
       bundler_args:
       dist: trusty
       env: PLATFORMS=deb_puppet5
-      rvm: 2.5.1
+      rvm: 2.5.3
       before_script:
       - bundle exec rake 'litmus:provision_list[travis_deb]'
       - bundle exec rake 'litmus:install_agent[puppet5]'
@@ -35,7 +40,7 @@ matrix:
       bundler_args:
       dist: trusty
       env: PLATFORM=deb_puppet6
-      rvm: 2.5.1
+      rvm: 2.5.3
       before_script:
       - bundle exec rake 'litmus:provision_list[travis_deb]'
       - bundle exec rake 'litmus:install_agent[puppet6]'
@@ -48,7 +53,7 @@ matrix:
       bundler_args:
       dist: trusty
       env: PLATFORMS=el7_puppet5
-      rvm: 2.5.1
+      rvm: 2.5.3
       before_script:
       - bundle exec rake 'litmus:provision_list[travis_el7]'
       - bundle exec rake 'litmus:install_agent[puppet5]'
@@ -61,7 +66,7 @@ matrix:
       bundler_args:
       dist: trusty
       env: PLATFORM=el7_puppet6
-      rvm: 2.5.1
+      rvm: 2.5.3
       before_script:
       - bundle exec rake 'litmus:provision_list[travis_el7]'
       - bundle exec rake 'litmus:install_agent[puppet6]'
@@ -112,12 +117,3 @@ branches:
     - release
 notifications:
   email: false
-deploy:
-  provider: puppetforge
-  user: puppet
-  password:
-    secure: ""
-  on:
-    tags: true
-    all_branches: true
-    condition: "$DEPLOY_TO_FORGE = yes"