Add ability to switch database driver

Also added mysqlconnector packages into default installation.

blueprint enable-mysql-connector

Change-Id: Ib2cda7cb183dc8f0ff4759cc6e9ecab469fd121c
diff --git a/files/rpms/neutron b/files/rpms/neutron
index f02c02b..aaff48a 100644
--- a/files/rpms/neutron
+++ b/files/rpms/neutron
@@ -4,6 +4,7 @@
 ebtables
 iptables
 iputils
+mysql-connector-python
 mysql-server # NOPRIME
 openvswitch # NOPRIME
 python-boto