Enable stylecop warnings 1205, 1212, and 1617 (dotnet/corefxdotnet/coreclr#39941)

Enable stylecop warnings 1205, 1212, and 1617 (dotnet/corefxdotnet/coreclr#39941)

* Enable stylecop warning 1617 (void return value should not be documented)

* Enable stylecop warning 1212 (get/set accessor ordering)

* Enable stylecop warning 1205 (modifier ordering)

Signed-off-by: dotnet-bot <dotnet-bot@microsoft.com>
Commit migrated from https://github.com/dotnet/coreclr/commit/1fede649ca386fa7ba7a5a2b26b4c95a9f675a2c