fixing unit testing contrib package

Now the contrib package is not installed in Debian
So test must check RedHat for exmaple
Gentoo is not failing so raise check should not be done anymore.

Author: cduelo

spec/unit/classes/server/contrib_spec.rb

@@ -10,9 +10,12 @@
   let :facts do
     {
       os: {
-        family: 'Debian',
-        name: 'Debian',
-        release: { 'full' => '8.0', 'major' => '8' },
+        family: 'RedHat',
+        name: 'RedHat',
+        release: { 'major' => '8' },
+        selinux: {
+          enabled: false,
+        },
       },
       kernel: 'Linux',
       id: 'root',
@@ -41,20 +44,4 @@
     end
   end
 
-  describe 'on Gentoo' do
-    let :facts do
-      {
-        os: {
-          family: 'Gentoo',
-          name: 'Gentoo',
-        },
-      }
-    end
-
-    it 'fails to compile' do
-      expect {
-        is_expected.to compile
-      }.to raise_error(%r{is not supported})
-    end
-  end
 end