Put nmap example into its own dir and add Dockerfile

poc/examples/nmap/nmap.pow

@@ -0,0 +1,19 @@
+#!/bin/bash
+
+#
+# Copyright 2019 Banco Bilbao Vizcaya Argentaria, S.A.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+kroute add -X POST '/list/{ip}' -c 'nmap -sL $(request /match/ip) | response /body'