Fix all the resting errors to have a valid swagger file.
They are still some warnings but nothing blocking.
Doing so I found that some request still misses son parameters for some POST/PUT/PATCH request. This means the a client generated from the swagger file will not work completely.
Fix#4088 by activating validation in drone
Should fix#4010.
* refactor struct's time to remove unnecessary memory usage
* use AsTimePtr simple code
* fix tests
* fix time compare
* fix template on gpg
* use AddDuration instead of Add
Antoine GIRARD
Bo-Yi Wu
Morgan Bazalgette
Lunny Xiao
Ethan Koenig
Sandro Santilli
Thomas Boerger
Rémy Boulanouar
Unknwon
lstahlman