Change mysql -> mysql-server in quantum.

There is no package called mysql in precise.

Change-Id: If047cb8d03f51c2f56e5da43573af596a8aca367
diff --git a/files/apts/quantum b/files/apts/quantum
index 568438f..ed3887b 100644
--- a/files/apts/quantum
+++ b/files/apts/quantum
@@ -1,5 +1,5 @@
 iptables
-mysql #NOPRIME
+mysql-server #NOPRIME
 sudo
 python-paste
 python-routes