fix missing nf_conntrack_tcp_timeout_time_wait netfilter for opencontrail

Change-Id: I4f3dcc676390c63ccea2101b6c974569d76c5e1d
diff --git a/opencontrail/control/analytics.yml b/opencontrail/control/analytics.yml
index 8cbd166..8065742 100644
--- a/opencontrail/control/analytics.yml
+++ b/opencontrail/control/analytics.yml
@@ -14,6 +14,9 @@
         python-kafka:
           version: 1.0.1-0contrail1
           hold: true
+      kernel:
+        modules:
+        - nf_conntrack_ipv4
   opencontrail:
     common:
       identity: