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/cgit.py

@@ -9,28 +9,28 @@ Ideally we would want to use the git repository directly, but cgit-managed repos
 METHOD = "cgit"
 
 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):
-            response = http.fetch_url(config.url + '/refs/tags')
-            soup = BeautifulSoup(response.text, features="html5lib")
+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:
+        response = http.fetch_url(config.url + '/refs/tags')
+        soup = BeautifulSoup(response.text, features="html5lib")
 
-            for table in soup.find_all("table", class_="list"):
-                for row in table.find_all("tr"):
-                    columns = row.find_all("td")
-                    if len(columns) != 4:
-                        continue
+        for table in soup.find_all("table", class_="list"):
+            for row in table.find_all("tr"):
+                columns = row.find_all("td")
+                if len(columns) != 4:
+                    continue
 
-                    version_str = columns[0].text.strip()
-                    version_match = config.first_match(version_str)
-                    if not version_match:
-                        continue
+                version_str = columns[0].text.strip()
+                version_match = config.first_match(version_str)
+                if not version_match:
+                    continue
 
-                    datetime_td = columns[3].find_next("span")
-                    datetime_str = datetime_td.attrs["title"] if datetime_td else None
-                    if not datetime_str:
-                        continue
+                datetime_td = columns[3].find_next("span")
+                datetime_str = datetime_td.attrs["title"] if datetime_td else None
+                if not datetime_str:
+                    continue
 
-                    version = config.render(version_match)
-                    date = dates.parse_datetime(datetime_str)
-                    product_data.declare_version(version, date)
+                version = config.render(version_match)
+                date = dates.parse_datetime(datetime_str)
+                product_data.declare_version(version, date)