License check failing

[Ken Krugler]

Hi devs,

I was trying to run mvn clean install -DskipTests from the release-1.0.3-c2 
branch, but the apache-rat-plugin license check was failing on four files.

These were in all Avro-generated files, in 
flink-staging/flink-avro/src/test/java/org/apache/flink/api/io/avro/generated/

I added

                                                
<exclude>flink-staging/flink-avro/src/test/java/org/apache/flink/api/io/avro/generated/**</exclude>

to the <excludes> list for RAT, but I’m wondering why nobody else is hitting 
this.

Thanks,

— Ken