🐞 allow missing migration files when checking migration status

We already pass `allow_missing_migration_files: true` when running
migrations. This flag is also required when checking if migrations are
current. It is now passed both places we call in to `Sequel::Migrator`.

Signed-off-by: Brian Upton <brian.upton@broadcom.com>
Signed-off-by: Joseph Palermo <joseph.palermo@broadcom.com>

src/bosh-director/lib/db_migrator.rb

@@ -18,7 +18,7 @@ def initialize(database, options = {}, retry_interval = DEFAULT_RETRY_INTERVAL)
   end
 
   def current?
-    Sequel::Migrator.is_current?(@database, MIGRATIONS_DIR)
+    Sequel::Migrator.is_current?(@database, MIGRATIONS_DIR, @options)
   end
 
   def migrate