Add generator of backlog based on Distribution API contents

[Quetzacoalt91]

Questions	Answers
Description?	Ease maintaining the versions.py files by relying on Distribution to get the new versions and get their related download URL. There is a new action: backlog that refreshes the file versions.py. It loads all the stables versions from Dsitribution API, then merges them with the existing branches and the nightly options. Every night, this repository will call Distribution API and will refresh versions.py with the command previously named. The action generate still generates the Dockerfile, but will now rely on Distribution API to retrieve the download link
Type?	new feature
BC breaks?	Nope
Deprecations?	No
Fixed ticket?	/
Sponsor company	/
How to test?	See below

The generated pull-request looks like this: Quetzacoalt91#3.

How to test?

The PR can be tested with one new command that will get you the following output:

$ ./prestashop_docker.py backlog
Refreshing contents of versions.py
Step 1/3: Fetching PHP tags from Docker Hub API
Step 2/3: Fetching PrestaShop releases from Distribution API
Step 3/3: Building list

• You may play with the versions.py to remove a stable version: Running the command will bring it back
• You may play with the versions.py to remove a branch: Running the command won't bring it back

[SiraDIOP]

Qa by Dev

[Quetzacoalt91]

The PR can be tested with one new command that will get you the following output:

$ ./prestashop_docker.py backlog
Refreshing contents of versions.py
Step 1/3: Fetching PHP tags from Docker Hub API
Step 2/3: Fetching PrestaShop releases from Distribution API
Step 3/3: Building list

• You may play with the versions.py to remove a stable version: Running the command will bring it back
• You may play with the versions.py to remove a branch: Running the command won't bring it back

[Progi1984]

⚠️ But the 9.0.0 is not the open source version : it's the Classic version.

How do you manage different versions of the Classic version : https://github.com/PrestaShopCorp/prestashop-classic/wiki/Classic-version-numbers ?

[Quetzacoalt91]

⚠️ But the 9.0.0 is not the open source version : it's the Classic version.

How do you manage different versions of the Classic version : https://github.com/PrestaShopCorp/prestashop-classic/wiki/Classic-version-numbers ?

As @jolelievre did with the classic release 9.0.0-1.0.
Each of them will be available here as well, and the code has been adapted so we get a simpler tag that aims for the most recent release of a given major (+ eventually minor) version. At the time of writing, pulling prestashop/prestashop:9 would pull prestashop/prestashop:9.0.0-1.0-classic

[M0rgan01]

💁‍♀️🙅‍♀️🙆‍♀️

[Quetzacoalt91]

@SiraDIOP previously said this one can be QA reviewed by the dev team (#424 (review)), anyone in @PrestaShop/prestashop-core-developers can try it.

[ga-devfront]