.travis.yml in datacenter-0.4.4 vs .travis.yml in datacenter-0.5.0

@@ -1,26 +1,23 @@
 language: ruby
 
 rvm:
-  - 1.9.3
-  - 2.0
-  - 2.1
   - 2.2
-  - 2.3.0
-  - 2.4.0
-  - 2.5.0
-  - jruby-1.7.25
-  - jruby-9.1.7.0
+  - 2.3
+  - 2.4
+  - 2.5
+  - 2.6
+  - 2.7
+  - jruby-9.2.9.0
   - ruby-head
   - jruby-head
 
 matrix:
   fast_finish: true
   allow_failures:
     - rvm: ruby-head
     - rvm: jruby-head
 
 before_install:
-  - gem install bundler
   - sudo apt-get -y install openssh-server
   - ssh-keygen -q -t rsa -N "" -f ~/.ssh/id_rsa
   - cp $HOME/.ssh/id_rsa.pub $HOME/.ssh/authorized_keys
\ No newline at end of file