Renamed 10_vmx_guestinfo.cfg to 99_

This patch renames the cloud-init config file for enabling the
datasource to have a higher priority.
diff --git a/rpm.spec b/rpm.spec
index f08c956..37b34fb 100644
--- a/rpm.spec
+++ b/rpm.spec
@@ -33,5 +33,5 @@
 
 %files
 %defattr(0644, root,root, 0755)
-/etc/cloud/cloud.cfg.d/10_vmx_guestinfo.cfg
+/etc/cloud/cloud.cfg.d/99_vmx_guestinfo.cfg
 /usr/lib/python2.7/site-packages/cloudinit/sources/DataSourceVmxGuestinfo.py