Add strict_variables support in unit tests

.travis.yml

@@ -11,6 +11,7 @@ env:
   - PUPPET_GEM_VERSION="~> 2.7.0"
   - PUPPET_GEM_VERSION="~> 3.2.0"
   - PUPPET_GEM_VERSION="~> 3.4.0"
+  - PUPPET_GEM_VERSION="~> 3.5.0.rc3" STRICT_VARIABLES="yes"
 matrix:
   fast_finish: true
   exclude:

spec/spec_helper.rb

@@ -16,6 +16,10 @@ RSpec.configure do |c|
     # Store any environment variables away to be restored later
     @old_env = {}
     ENV.each_key {|k| @old_env[k] = ENV[k]}
+
+    if ENV['STRICT_VARIABLES'] == 'yes'
+      Puppet.settings[:strict_variables]=true
+    end
   end
 
   c.after :each do