fix failing unit test for grant parameters

Author: George Hansper

spec/unit/defines/server/grant_spec.rb

@@ -233,7 +233,7 @@
       "class {'postgresql::server':}"
     end
 
-    it { is_expected.to compile.and_raise_error(/parameter 'object_name' variant 0 expects size to be 2, got 1/) }
+    it { is_expected.to compile.and_raise_error(/parameter 'object_name' variant [012] expects size to be 2, got 1/) }
   end
 
   context 'invalid object_name - too many array elements' do
@@ -251,7 +251,7 @@
       "class {'postgresql::server':}"
     end
 
-    it { is_expected.to compile.and_raise_error(/parameter 'object_name' variant 0 expects size to be 2, got 3/) }
+    it { is_expected.to compile.and_raise_error(/parameter 'object_name' variant [012] expects size to be 2, got 3/) }
   end
 
 end