RFR: pr: do not run commit commands when .jcheck/conf is missing [v2]

[Erik Helin]

> Hi all,
> 
> please review this patch that ensures that we do _not_ run commit commands if there is no `.jcheck/conf` present in the tree for the commit.
> 
> Thanks,
> Erik

Erik Helin has updated the pull request incrementally with one additional commit since the last revision:

  Add tests

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

Changes:
  - all: https://git.openjdk.java.net/skara/pull/1070/files
  - new: https://git.openjdk.java.net/skara/pull/1070/files/3b462e33..e5e2b3be

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=skara&pr=1070&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=skara&pr=1070&range=00-01

  Stats: 46 lines in 2 files changed: 39 ins; 1 del; 6 mod
  Patch: https://git.openjdk.java.net/skara/pull/1070.diff
  Fetch: git fetch https://git.openjdk.java.net/skara pull/1070/head:pull/1070

PR: https://git.openjdk.java.net/skara/pull/1070