RFR: SKARA-1119: A bot should remind a PR author not to force push [v2]

[Guoxiong Li]

> Hi all,
> 
> This patch adds a suggestion comment to the PR when the developers force-push the branch each time. Because I can't find the related rest api of the GitLab so I only implement it for GitHub.
> 
> Thanks for taking the time to review.
> 
> Best Regards,
> -- Guoxiong

Guoxiong Li has updated the pull request incrementally with one additional commit since the last revision:

  Fix suggestion comment.

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

Changes:
  - all: https://git.openjdk.java.net/skara/pull/1328/files
  - new: https://git.openjdk.java.net/skara/pull/1328/files/d4717ebf..c68c9680

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=skara&pr=1328&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=skara&pr=1328&range=00-01

  Stats: 3 lines in 1 file changed: 0 ins; 0 del; 3 mod
  Patch: https://git.openjdk.java.net/skara/pull/1328.diff
  Fetch: git fetch https://git.openjdk.java.net/skara pull/1328/head:pull/1328

PR: https://git.openjdk.java.net/skara/pull/1328