Update user config, change private mail address

_machines/notebook01.yml

@@ -8,9 +8,11 @@ users:
   firefox_profiles:
     - name: lu9k8ywl.default
       manage_css: false
-  mail: hannes.koerber@haktec.de
+  mail: hannes@hkoerber.de
   git_gpg_sign: true
   gpg_agent: true
+  gpg_keys:
+    master_key: "0xB5C002530C6A2053"
 
 screen:
   1: eDP-1