[ovn] Handle ovn central options

Since ovs 2.8 remote ports of NB/SB are closed by default,
so get options from pillar to open required ports.

Change-Id: I4b4437a35ec8719113757a524f429b5d7b3cd28e
diff --git a/tests/pillar/control_ovn.sls b/tests/pillar/control_ovn.sls
index 0dc9e22..a173679 100644
--- a/tests/pillar/control_ovn.sls
+++ b/tests/pillar/control_ovn.sls
@@ -49,6 +49,9 @@
       port: 5672
       user: openstack
       virtual_host: /openstack
+    ovn_ctl_opts:
+      db-nb-create-insecure-remote: 'yes'
+      db-sb-create-insecure-remote: 'yes'
 
 linux:
   system: