[addons] drop ssh keys but add script to generate them

Author: npf

addons/README

@@ -0,0 +1,3 @@
+# First generate the deploy ssh key pair before building the addons
+
+kadeploy/addons$ ./generate-deploy-ssh-keys

addons/generate-deploy-ssh-keys

@@ -0,0 +1,6 @@
+#!/bin/bash -e
+# Generate the ssh keys to be used by addons
+
+mkdir -p ssh
+cd ssh 
+ssh-keygen -f id_deploy -N ""

addons/ssh/.gitignore

@@ -0,0 +1,2 @@
+id_deploy
+id_deploy.pub