backuppc: added support for deploying ssh keys and changed to use apache module.

backuppc/plugins/facter/backuppc_sshkey.rb

@@ -0,0 +1,13 @@
+Facter.add('backuppc_sshkey') do
+    setcode do
+	begin
+	    match = File.read('/var/lib/BackupPC/.ssh/id_rsa.pub')[/^ssh-rsa ([^ ]+)/, 1]
+	    if match
+		data = match
+	    end
+	rescue
+	    data = ''
+	end
+	data
+    end
+end