Update changelog

Change-Id: I6e9e85c19d3f71c2792031ecfd8d9db9580341af
Reviewed-on: http://gerrit.causes.com/41020
Tested-by: jenkins <jenkins@causes.com>
Reviewed-by: Shane da Silva <shane.dasilva@brigade.com>
Cut version 0.26.1

Change-Id: Iba8e42166c7592b5be81a6b3b4b500c2f5be53d8
Reviewed-on: http://gerrit.causes.com/41021
Tested-by: jenkins <jenkins@causes.com>
Reviewed-by: Shane da Silva <shane.dasilva@brigade.com>