Added option to specify a custom commit-description

Reviewed-by: tischrei <tino.schreiber@t-systems.com>
Reviewed-by: Hasko, Vladimir <vladimir.hasko@t-systems.com>
Co-authored-by: Gode, Sebastian <sebastian.gode@t-systems.com>
Co-committed-by: Gode, Sebastian <sebastian.gode@t-systems.com>

tools/generate_doc_confpy.py

@@ -245,11 +245,7 @@ def process_repositories(args, service):
         )
         return
     repo_to.index.commit(
-        (
-            "Update tox.ini && conf.py file\n\n"
-            "Performed-by: gitea/infra/otc-metadata/"
-            "tools/generate_doc_confpy.py"
-        )
+        args.commit_description
     )
     push_args = ["--set-upstream", "origin", branch_name]
     if args.branch_force:
@@ -332,6 +328,15 @@ def main():
         help=("Whether to overwrite index.rst for service-based-view."
               + "\nCan only be used if --update-sbv is also specified")
     )
+    parser.add_argument(
+        "--commit-description",
+        default=(
+            "Update tox.ini && conf.py file\n\n"
+            "Performed-by: gitea/infra/otc-metadata/"
+            "tools/generate_doc_confpy.py"
+        ),
+        help="Commit description for the commit",
+    )
 
     args = parser.parse_args()
     logging.basicConfig(level=logging.DEBUG)