fix examples

Author: westonplatter

examples/complete/fixtures.tfvars

@@ -5,9 +5,11 @@
 db_username = "admin_user"
 db_password = "insecure-pass-for-demo"
 
-db_scheme   = "postgres"
-db_hostname = "localhost"
-db_port     = 5432
+db_scheme    = "postgres"
+db_hostname  = "localhost"
+db_port      = 5432
+db_superuser = true
+db_sslmode   = "disable"
 
 databases = [
   {