Change CopyrightHeaderRule order to run later

src/Microsoft.DotNet.CodeFormatting.Tests/Rules/CombinationTest.cs

@@ -266,5 +266,38 @@ private void M()
 
             Verify(source, expected, runFormatter: false);
         }
+
+        [Fact]
+        public void CSharpHeaderCorrectAfterMovingUsings()
+        {
+
+            var source = @"
+namespace Microsoft.Build.UnitTests
+{
+    using System;
+    using System.Reflection;
+
+    public class Test
+    {
+        public void RequiredRuntimeAttribute() 
+       {}
+    }
+}";
+            var expected = @"// header
+
+using System;
+using System.Reflection;
+
+namespace Microsoft.Build.UnitTests
+{
+    public class Test
+    {
+        public void RequiredRuntimeAttribute()
+        { }
+    }
+}";
+
+            Verify(source, expected);
+        }
     }
 }

src/Microsoft.DotNet.CodeFormatting/Rules/RuleOrder.cs

@@ -13,11 +13,11 @@ namespace Microsoft.DotNet.CodeFormatting.Rules
     internal static class SyntaxRuleOrder
     {
         public const int HasNoCustomCopyrightHeaderFormattingRule = 1;
-        public const int CopyrightHeaderRule = 2;
-        public const int UsingLocationFormattingRule = 3;
-        public const int NewLineAboveFormattingRule = 4;
-        public const int BraceNewLineRule = 6;
-        public const int NonAsciiChractersAreEscapedInLiterals = 7;
+        public const int UsingLocationFormattingRule = 2;
+        public const int NewLineAboveFormattingRule = 3;
+        public const int BraceNewLineRule = 4;
+        public const int NonAsciiChractersAreEscapedInLiterals = 5;
+        public const int CopyrightHeaderRule = 6;
     }
 
     // Please keep these values sorted by number, not rule name.