Fix tests for some more fixnum -> integer

Author: Kevin Paulisse

spec/octocatalog-diff/integration/fact_override_spec.rb

@@ -136,14 +136,14 @@
       expect(file).to include('my_boolean: TrueClass true')
       expect(file).to include('my_integer: Fixnum 42')
       expect(file).to include('my_float: Float 3.14159')
-      expect(file).to include('my_floating_integer: Integer -100')
+      expect(file).to include('my_floating_integer: Fixnum -100')
       expect(file).to include('my_json: String "{\\"hello\\":\\"world\\"}"')
       expect(file).to include('my_boolean_string: FalseClass false')
-      expect(file).to include('my_integer_string: Integer 42')
+      expect(file).to include('my_integer_string: Fixnum 42')
       expect(file).to include('my_float_string: Float 3.14159')
       expect(file).to include('real_boolean: FalseClass false')
       expect(file).to include('real_float: Float 3.14159')
-      expect(file).to include('real_integer: Integer 42')
+      expect(file).to include('real_integer: Fixnum 42')
       expect(file).to include('real_string: String "chicken"')
     end