[clock] more info on refusal to advance hybrid timestamp

Enhanced the error message on the attempt to update hybrid timestamp
beyond the maximum allowed error threshold.

This patch does not contain any functional changes.

Change-Id: I676fc89fb96fa5383ae354207b64bed3ffe00300
Reviewed-on: http://gerrit.cloudera.org:8080/14455
Tested-by: Kudu Jenkins
Reviewed-by: Adar Dembo <adar@cloudera.com>
1 file changed