Improve scripts execution orchestration (#299)

Until now products could declare multiple auto-update methods, but they all had to be of the same kind.
For example if you used the git auto-update method, you could not use an additional github_releases or custom auto-update method.
This is an issue as it prevents us to extend the auto-update process, for example by having a product using the 'git' auto-update method to retrieve all the versions, and a custom script to retrieve support and EOL dates.

This improve the scripts execution orchestration to be able to support auto configurations using a mix of methods, meaning:

- multiple kind of methods, such as git and github_release,
- or multiple custom methods.

A side-effect of those changes is that now a failure in a generic script does not cancel the update of subsequent products.

Another side-effect, unwanted this time, is that now custom scripts managing multiple products, such as apple.py, are now executed multiple times instead of once.

src/git.py

@@ -8,16 +8,16 @@ from common.git import Git
 METHOD = 'git'
 
 p_filter = sys.argv[1] if len(sys.argv) > 1 else None
-for product in endoflife.list_products(METHOD, p_filter):
-    with releasedata.ProductData(product.name) as product_data:
-        for config in product.get_auto_configs(METHOD):
-            git = Git(config.url)
-            git.setup(bare=True)
+m_filter = sys.argv[2] if len(sys.argv) > 2 else None
+for config in endoflife.list_configs(p_filter, METHOD, m_filter):
+    with releasedata.ProductData(config.product) as product_data:
+        git = Git(config.url)
+        git.setup(bare=True)
 
-            tags = git.list_tags()
-            for tag, date_str in tags:
-                version_match = config.first_match(tag)
-                if version_match:
-                    version = config.render(version_match)
-                    date = dates.parse_date(date_str)
-                    product_data.declare_version(version, date)
+        tags = git.list_tags()
+        for tag, date_str in tags:
+            version_match = config.first_match(tag)
+            if version_match:
+                version = config.render(version_match)
+                date = dates.parse_date(date_str)
+                product_data.declare_version(version, date)