Fix command hint to generate a config file (#4353)

* Fix command hint to generate a config file

When trying to start Synapse without a config file, it will complain
and give a hint towards what command to run. This hinted command
is missing the "report_stats" parameter, which is required with either
yes or no value. Add this to the command.

Not an ideal situation but makes the given command work without the
user getting another error, even though it might be unclear what
"report_stats" represents.

Signed-off-by: Jason Robinson <jasonr@matrix.org>

AUTHORS.rst

@@ -65,4 +65,7 @@ Pierre Jaury <pierre at jaury.eu>
 * Docker packaging
 
 Serban Constantin <serban.constantin at gmail dot com>
- * Small bug fix
+ * Small bug fix
+
+Jason Robinson <jasonr at matrix.org>
+ * Minor fixes

changelog.d/4353.misc

@@ -0,0 +1 @@
+Fix command hint to generate a config file when trying to start without a config file

synctl

@@ -156,7 +156,9 @@ def main():
         write(
             "No config file found\n"
             "To generate a config file, run '%s -c %s --generate-config"
-            " --server-name=<server name>'\n" % (" ".join(SYNAPSE), options.configfile),
+            " --server-name=<server name> --report-stats=<yes/no>'\n" % (
+                " ".join(SYNAPSE), options.configfile,
+            ),
             stream=sys.stderr,
         )
         sys.exit(1)