RFR: 1419: The Skara PR bot should not block on a JEP if not enabled for a repo [v2]

[Guoxiong Li]

> Hi all,
> 
> If a repository doesn't support JEP and someone issues the `/jep` command in the PR of this repo, the bot should replies a comment instead of blocking the PR. This patch adds a jep config to the PR bot and adjusts the test cases.
> 
> Thanks for taking the time to review.
> 
> Best Regards,
> -- Guoxiong

Guoxiong Li has updated the pull request incrementally with two additional commits since the last revision:

 - Fix comment of the csr command.
 - Fix commment of the jep command and add a test case.

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

Changes:
  - all: https://git.openjdk.java.net/skara/pull/1310/files
  - new: https://git.openjdk.java.net/skara/pull/1310/files/e2386e47..b1dfc46d

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=skara&pr=1310&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=skara&pr=1310&range=00-01

  Stats: 48 lines in 4 files changed: 45 ins; 0 del; 3 mod
  Patch: https://git.openjdk.java.net/skara/pull/1310.diff
  Fetch: git fetch https://git.openjdk.java.net/skara pull/1310/head:pull/1310

PR: https://git.openjdk.java.net/skara/pull/1310