Refactor product releases writing

Create a common function to write resulting JSON files to the releases directory.
It makes this task simpler to read and maintain, while making it modifiable at a central point in the future.
One example of such modification could be the sorting of the versions in a uniform way for all the scripts.

src/rhel.py

@@ -1,4 +1,3 @@
-import json
 import re
 from bs4 import BeautifulSoup
 from common import endoflife
@@ -7,11 +6,11 @@ URL = "https://access.redhat.com/articles/3078"
 # https://regex101.com/r/877ibq/1
 regex = r"RHEL (?P<major>\d)(\. ?(?P<minor>\d+))?(( Update (?P<minor2>\d))| GA)?"
 
-versions = {}
-
 print("::group::rhel")
 response = endoflife.fetch_url(URL)
 soup = BeautifulSoup(response, features="html5lib")
+
+versions = {}
 for tr in soup.findAll("tr"):
     td_list = tr.findAll("td")
     if len(td_list) > 0:
@@ -25,7 +24,6 @@ for tr in soup.findAll("tr"):
         date = td_list[1].get_text()
         versions[version] = date
         print("%s: %s" % (version, date))
-print("::endgroup::")
 
-with open("releases/redhat.json", "w") as f:
-    f.write(json.dumps(versions, indent=2))
+endoflife.write_releases('redhat', versions)
+print("::endgroup::")