Cleanup Windows 10 version detection (dotnet/corefx#25052)

Cleanup Windows 10 version detection (dotnet/corefx#25052)

* Cleanup Windows 10 version detection

Windows 10 Version 1709 ("Fall Creators Update") has been released. This
PR cleans up the version detection to use the latest RTM build numbers
and removes obsolete InsiderPreview detection for those tests.

Also, removed ActiveIssue for tests that are now fixed due to Windows 10
fixes.

Fixes dotnet/corefx#22187

* Addressed feedback

Commit migrated from https://github.com/dotnet/corefx/commit/ac410223aa763a0f67880815057ee1bfe0f4cb6e