Add answer for kub

Signed-off-by: Arnaud M <arnaud.choupinette@mailops.fr>

kubernetes/training/lessons/uncipher.sh

@@ -0,0 +1,7 @@
+#!/bin/bash
+
+find . -name '*.gpg' | while read f ; do
+  echo "Unciphering $f"
+  n=${f%.gpg}
+  cat $f | gpg -d > $n
+done