Keep rs_id in ID field if we also annotate with COSMIC.

Author: roryk

config/vcfanno/somatic.conf

@@ -10,6 +10,6 @@ ops=["uniq"]
 
 [[postannotation]]
 name="ID"
-fields=["cosmic_id", "ID"]
+fields=["cosmic_id", "rs_id", "ID"]
 op="setid"
 type="String"