updated silent config file construction

templates/baas-silent-install.conf.j2

diff --git a/templates/baas-silent-install.conf.j2 b/templates/baas-silent-install.conf.j2
index 33c68c4..56c100f 100644
--- a/templates/baas-silent-install.conf.j2
+++ b/templates/baas-silent-install.conf.j2
@@ -34,6 +34,7 @@
 {% elif groups['dc-2'] is defined and inventory_hostname in groups['dc-2'] %}
 BAAS_CASS_LOCALDC=dc-2
 BAAS_CASS_DC_LIST="dc-2"
+BAAS_CLUSTER_SEEDS="dc-2:{{ hostvars[groups['dc-2-baas'][0]] }}"
 {% endif %}