Add a demo of ELCE 2019 regarding a safe update feature

Background

A demo of ELCE 2019 is not included in cip-sw-updates-demo because the branch relevant to SWUpdate was not clear at that time.

Description

Add a demo of ELCE 2019 to cip-sw-updates-demo.

Goal

Add a demo of ELCE 2019 to cip-sw-updates-demo
Test the demo

Edited Sep 11, 2020 by Akihiro Suzuki

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