Added .asf.yaml to be ignored by apache-rat-plguin.
Added .asf.yaml to be ignored by apache-rat-plguin.

mcculls/maven,olamy/maven,olamy/maven,apache/maven,mcculls/maven,olamy/maven,mcculls/maven,cstamas/maven,apache/maven,apache/maven,cstamas/maven,cstamas/maven