Use datastore option

Author: jvazquez-r7

modules/auxiliary/scanner/http/f5_bigip_http_vs_scanner.rb

@@ -47,7 +47,7 @@ def bigip_http?(ip, port, ssl)
         'uri' => '/',
         'rport' => port,
         'SSL' => ssl,
-        'timeout' => 1
+        'timeout' => datastore['TIMEOUT']
       )
       return false unless res
       server = res.headers['Server']