Add two RAT excludes
Add two RAT excludes

- .avsc files can't have a comment header
- The HTML template used for the doxygen footer seems small enough that
  it's not a big deal to add the license header, vs the extra cost of
  putting all the license text multiple times into all of the generated
  doc HTML.

Change-Id: Ia7970326680af1643e81c248346de3714bdfe72f
Reviewed-on: http://gerrit.cloudera.org:8080/4396
Reviewed-by: Mike Percy <e07a1fd797b473a9c849e618aa2ce06d8055760b@apache.org>
Tested-by: Kudu Jenkins

EvilMcJerkface/kudu,helifu/kudu,EvilMcJerkface/kudu,helifu/kudu,cloudera/kudu,andrwng/kudu,InspurUSA/kudu,cloudera/kudu,InspurUSA/kudu,EvilMcJerkface/kudu,andrwng/kudu,helifu/kudu,cloudera/kudu,andrwng/kudu,cloudera/kudu,cloudera/kudu,InspurUSA/kudu,InspurUSA/kudu,andrwng/kudu,cloudera/kudu,andrwng/kudu,helifu/kudu,helifu/kudu,cloudera/kudu,andrwng/kudu,InspurUSA/kudu,andrwng/kudu,InspurUSA/kudu,helifu/kudu,EvilMcJerkface/kudu,helifu/kudu,EvilMcJerkface/kudu,EvilMcJerkface/kudu,andrwng/kudu,helifu/kudu,andrwng/kudu,EvilMcJerkface/kudu,EvilMcJerkface/kudu,InspurUSA/kudu,InspurUSA/kudu,helifu/kudu,cloudera/kudu,EvilMcJerkface/kudu,InspurUSA/kudu,cloudera/kudu