Replace /etc/aptly-publisher.yaml -> /etc/aptly/publisher.yaml

Closes bug: PROD-20498

Change-Id: Ib605b175f4c30ec62260a89e25af57a3909d7ebf
diff --git a/src/com/mirantis/mk/Aptly.groovy b/src/com/mirantis/mk/Aptly.groovy
index 94f085f..acad991 100644
--- a/src/com/mirantis/mk/Aptly.groovy
+++ b/src/com/mirantis/mk/Aptly.groovy
@@ -117,7 +117,7 @@
 
 }
 
-def publish(server, config='/etc/aptly-publisher.yaml', recreate=false, only_latest=true, force_overwrite=true, opts='-d --timeout 3600') {
+def publish(server, config='/etc/aptly/publisher.yaml', recreate=false, only_latest=true, force_overwrite=true, opts='-d --timeout 3600') {
     if (recreate == true) {
         opts = "${opts} --recreate"
     }