Add nodeset for centos5 on docker

.travis.yml

@@ -9,8 +9,6 @@ matrix:
   include:
   - rvm: 1.8.7
     env: PUPPET_GEM_VERSION="~> 3.0" FACTER_GEM_VERSION="~> 1.7.0"
-  - rvm: 1.9.3
-    env: PUPPET_GEM_VERSION="~> 3.6.0"
   - rvm: 1.9.3
     env: PUPPET_GEM_VERSION="~> 3.0"
   - rvm: 2.0.0

spec/acceptance/nodesets/centos-5-x86_64-docker.yml

+HOSTS:
+  centos-5-x64:
+    default_apply_opts:
+      strict_variables:
+    platform: el-5-x86_64
+    hypervisor : docker
+    image: centos:5
+    # This stops the image from being deleted on completion, speeding up the process.
+    docker_preserve_image: true
+CONFIG:
+  type: foss
+  log_level: debug