rpmbuild: save review.json from fedora-review

See https://pagure.io/FedoraReview/pull-request/463
See https://pagure.io/FedoraReview/issue/310

I am planning to use this file from the fedora-review-service and
provide users better feedback based on that.

Also, we don't need to depend on a specific fedora-review version. If
the file is not present, we skip it without failing.

rpmbuild/copr_rpmbuild/automation/fedora_review.py

@@ -73,7 +73,8 @@ def _filter_results_directory(self):
             self.log.error("Can't find fedora-review results: %s", srcdir)
             return
 
-        results = ["review.txt", "licensecheck.txt", "rpmlint.txt", "files.dir"]
+        results = ["review.txt", "review.json", "licensecheck.txt",
+                   "rpmlint.txt", "files.dir"]
         for result in results:
             try:
                 os.rename(os.path.join(srcdir, result),