Track LTS for Debian EOL status. (#18084)

Unlike most other platforms we support, it’s trivial for us to support
Debian’s LTS distros, and we’ve effectively been doing that for quite
some time now, so just make it official in the CI jobs.

.github/data/distros.yml

@@ -144,6 +144,7 @@ include:
     notes: ''
     base_image: debian:bookworm
     eol_check: true
+    eol_lts: true
     bundle_sentry:
       <<: *default_sentry
       amd64: true

.github/scripts/gen-matrix-eol-check.py

@@ -21,7 +21,8 @@ for item in data['include']:
         entries.append({
             'distro': distro,
             'release': item['version'],
-            'full_name': f'{ item["distro"] } { item["version"] }'
+            'full_name': f'{ item["distro"] } { item["version"] }',
+            'lts': 1 if 'eol_lts' in item and item['eol_lts'] else 0,
         })
 
 entries.sort(key=lambda k: (k['distro'], k['release']))

.github/scripts/platform-impending-eol.py

@@ -16,6 +16,7 @@ LEAD_DAYS = datetime.timedelta(days=30)
 
 DISTRO = sys.argv[1]
 RELEASE = sys.argv[2]
+LTS = sys.argv[3]
 
 EXIT_NOT_IMPENDING = 0
 EXIT_IMPENDING = 1
@@ -49,10 +50,19 @@ except urllib.error.HTTPError as e:
 
 eol = datetime.date.fromisoformat(data['eol'])
 
+if LTS == '1' and 'extendedSupport' in data:
+    datetime.date.fromisoformat(data['extendedSupport'])
+else:
+    LTS = False
+
 offset = abs(eol - NOW)
 
 if offset <= LEAD_DAYS:
-    print(data['eol'])
+    if LTS:
+        print(data['extendedSupport'])
+    else:
+        print(data['eol'])
+
     sys.exit(EXIT_IMPENDING)
 else:
     sys.exit(EXIT_NOT_IMPENDING)

.github/workflows/platform-eol-check.yml

@@ -73,7 +73,7 @@ jobs:
         id: check
         shell: sh {0}
         run: |
-          d="$(.github/scripts/platform-impending-eol.py ${{ matrix.distro }} ${{ matrix.release }})"
+          d="$(.github/scripts/platform-impending-eol.py ${{ matrix.distro }} ${{ matrix.release }}) ${{ matrix.lts }}"
           case $? in
             0) echo "pending=false" >> "${GITHUB_OUTPUT}" ;;
             1)