Add cosmic to default distros to build for

utils/do_debian_package.sh

@@ -76,7 +76,7 @@ fi;
 
 if [ "$DISTROS" == "" ]; then
   if [ "$RELEASE" != "" ]; then
-    DISTROS="xenial,bionic,trusty"
+    DISTROS="xenial,bionic,cosmic,trusty"
   else
     DISTROS=`lsb_release -a 2>/dev/null | grep Codename | awk '{print $2}'`;
   fi;