complain about urls pointing to gerrit reviews and jira tasks

urls to reviews should be replaced by sha1s of merged commits.
urls to jira tasks should be replaced by task-number footers.

the rationale is keeping the history relocatable, and somewhat
independent from the infrastructure's software.
also, urls are pretty noisy.

Change-Id: I4b2c9ded8cbc02ca96daa4a2ff92c98c0a4b05f9
Reviewed-by: Sergio Ahumada <sahumada@blackberry.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>