Publish atom.xml for manuals

We need a way to put atom.xml on the docs.o.o webpage - its the
only xml file we publish. A second ftp publisher has been created
that just publishes this file.

Closes-Bug: #1228604
Change-Id: I0a216ae71bfedfd98726b2e1d0df998700d06f95
Merge "Publish atom.xml for manuals"