feature/geo-rep: Fix skipped files logging.

When changelog is failed to process even after max
retries, files are skipped but were not logging.
This patch addresses this issue to log the skipped
files.

BUG: 1159198
Change-Id: I1f3d62cb61a940ee5e10e5a79e08fa65e1c15e97
Reviewed-on: http://review.gluster.org/7945
Signed-off-by: Kotresh HR <khiremat@redhat.com>
Reviewed-on: http://review.gluster.org/9022
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Venky Shankar <vshankar@redhat.com>
Tested-by: Venky Shankar <vshankar@redhat.com>