explicitly enable avahi

Change-Id: I8d3c639bfeb6797a5d61ea21e55ac23da1504120
diff --git a/distro-configs/LibreOfficeLinux.conf b/distro-configs/LibreOfficeLinux.conf
index 711d6c3..c0b43e1 100644
--- a/distro-configs/LibreOfficeLinux.conf
+++ b/distro-configs/LibreOfficeLinux.conf
@@ -16,6 +16,7 @@
--with-external-thes-dir=/usr/share/mythes
--with-external-hyph-dir=/usr/share/hyphen
--with-external-dict-dir=/usr/share/hunspell
--enable-avahi
--enable-dbus
--enable-extension-integration
--enable-odk