upload/koji: add helpers to upload to koji

This does not yet actually upload the image, and it only supports empty
images. You need to place a an empty file named <filename>, with a valid
extension (e.g., .qcow2) in /mnt/koji/work/<directory>/.

Signed-off-by: Tom Gundersen <teg@jklm.no>

vendor/github.com/kolo/xmlrpc/test_server.rb

@@ -0,0 +1,25 @@
+# encoding: utf-8
+
+require "xmlrpc/server"
+
+class Service
+  def time
+    Time.now
+  end
+
+  def upcase(s)
+    s.upcase
+  end
+
+  def sum(x, y)
+    x + y
+  end
+
+  def error
+    raise XMLRPC::FaultException.new(500, "Server error")
+  end
+end
+
+server = XMLRPC::Server.new 5001, 'localhost'
+server.add_handler "service", Service.new
+server.serve