Arrange including of salt_syndic_enabled

To have a possibility to override the parameter by
overrides the parameter should be defined in infra/init.yml.

Change-Id: I6aedc62efecd51665309bf55c5e4f5f50e39c5d1
Related-PROD: PROD-20579
diff --git a/classes/cluster/os-ha-ovs-syndic/infra/init.yml b/classes/cluster/os-ha-ovs-syndic/infra/init.yml
index 61d2374..0639ab8 100644
--- a/classes/cluster/os-ha-ovs-syndic/infra/init.yml
+++ b/classes/cluster/os-ha-ovs-syndic/infra/init.yml
@@ -6,6 +6,7 @@
     infra_config_hostname: cfg01
     infra_config_address: 172.16.10.90
     salt_syndic_master_address: 192.168.10.90
+    salt_syndic_enabled: false
   linux:
     network:
       host: