Add .asf.yaml

Change-Id:If97ac8dad8df435c9a0c13efad7aee113ae3acd5
Reviewed-on: https://asterix-gerrit.ics.uci.edu/c/incubator-asterixdb-site/+/12946
Reviewed-by: Ian Maxon <imaxon@uci.edu>
diff --git a/.asf.yaml b/.asf.yaml
new file mode 100644
index 0000000..b797815
--- /dev/null
+++ b/.asf.yaml
@@ -0,0 +1,5 @@
+publish:
+  whoami: asf-site
+
+staging:
+  whoami: asf-site