release note generation mangles markdown links

[calebamiles]

Comparing the final version of the release notes with the draft [2] it was noted that markdown links will be rendered incorrectly due to what looks like an automated link to PR. The link generation is also subtly incorrect as some links of the form github.com/someCompany/someRepo/issues/someIssue will be rewritten as github.com/kubernetes/kubernetes/pull/someIssue.

cc: @bgrant0607

[xiangpengzhao]

xref: #360

[bgrant0607]

cc @kubernetes/sig-release-bugs

[xiangpengzhao]

I will try to understand the scripts. @david-mcmahon any ideas?
BTW, we had this issue both in 1.7 (kubernetes/kubernetes#48328) and 1.8 (kubernetes/kubernetes#53286). Hope we don't meet this in the future releases...

[enisoc]

For 1.9, I'm hoping to switch to the new Go implementation (#434).

@jennybuckley @roycaihw Does the new implementation still exhibit this problem?

[david-mcmahon]

Good point @enisoc. Once this gets submitted and we integrate with anago, we can close this issue.

[roycaihw]

@enisoc @david-mcmahon Yes, I think it still exhibit the problem. HTML-izing markdown file is kind of complicated, and the Go implementation relies on the same sed command as #360 pointed out.