* Instead of using two containers all custom projects are deployed to
the same container

* For custom project stable releases a dedicated container as been created

* The script search for all type of artifacts (uboot, kernel, fs, image
files) and exit with an error in case something is missing
* This prevent to have build jobs that succed even though not all
artifacts were produced

* Instead of hardcoding the gitlab repository ID the script accepts a
list of which the manifest project it the first element
* Introduce CHANGELOG_PROJECTS variable containing the list of projects

* Fix name of uboot artifacts for all NXP boards
* Create array of uboot files for c31 boards
* The deploy search for all uboot artifacts in the build path
* Create rule to not deploy artifacts to public container if a tag
occurs

* The tasks to be executed by the deploy and notify jobs are moved to
shell scripts inside the scripts folder
* This avoid having a long list of instructions inside the pipeline
file

* Fix on KERNEL variable for c31
* Increase deploy job timeout to 1h

* Insert separate search for projects on which the CUSTOM variable is
defined

* This is necessary for custom projects manifest to not run jobs
regarding catalogue boards

* When a tag occurs the repo tool use the reference to the tag instead
of the head of the MASTER_BRANCH

* Add condition to use public container to store report when a tag
occurs

* The SSH key and configs are no more needed since migrated everything
to https

* Separate caches folder to be used for the two distros
* Avoid using cache and downloads for tagged builds
* Reduce expiration policy of the build to 24 hours

* The description shall be filled by the Release Notes file

* This change allows to build on schedule not only on the MASTER_BRANCH
but also on different branches (those on which the schedule is
programmed)

* This is necessary because the SRCBRANCH of the BSP repositories is
forced to be the master in recipe and this would create conflicts
with the SRCREV
* Remove the SSH related config commands since using https with token
* Restiling of the build commands that are moved to two separated bash scripts

* The command is necessary as long as all Edgehog repositories are
private

* Each CPU processor is suggested to have a different sstate-cache folder
* The 'downloads' folder remains unique for all edgehog projects

* For Edgehog embedded images the fs was not deployed and so a fix was
necessary

* This is necessary to guarantee write access to edgehog folder in build
server containing sstate and downloads caches
* Move env initizialization to .initenv
* Reduce build artifacts expiration time to 1 week