Merge pull request #2251 from seanmonstar/2244-ephemeral-awsboxes

update awsbox with generate_ephemeral_keys.js

This gets my seal of approval.  r+

Thanks @seanmonstar

close #2244

scripts/awsbox/post_deploy.js

@@ -2,7 +2,7 @@
 
 if [ ! -f $HOME/var/root.cert ] ; then
     echo ">> generating keypair"
-    scripts/generate_ephemeral_keys.sh
+    scripts/generate_ephemeral_keys.js
     mv var/root.{cert,secretkey} $HOME/var
 else
     echo ">> no keypair needed.  you gots one"