RFR: git-pr: integrate should handle sponsor messages

[Erik Helin]

Hi all,

please review this small patch that makes `git pr integrate` handle replies from
the bots about the PR needing a sponsor.

Thanks,
Erik

-------------

Commits:
 - 040c3bb1: git-pr: integrate should handle sponsor messages

Changes: https://git.openjdk.java.net/skara/pull/484/files
 Webrev: https://webrevs.openjdk.java.net/skara/484/webrev.00
  Stats: 5 lines in 1 file changed: 5 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/skara/pull/484.diff
  Fetch: git fetch https://git.openjdk.java.net/skara pull/484/head:pull/484

PR: https://git.openjdk.java.net/skara/pull/484