added missing opensearch_security_auth_type var

Author: jurgenmehja

manifests/dashboard.pp

@@ -17,6 +17,7 @@
   # Parameters used for OpenID login
   $enable_openid_login = undef,
   $opensearch_ssl_verificationMode = undef,
+  $opensearch_security_auth_type = undef,
   $opensearch_security_openid_connect_url = undef,
   $opensearch_security_openid_client_id = undef,
   $opensearch_security_openid_client_secret = undef,