Add total_event_bytes to room statistics schema.

Signed-off-by: Olivier Wilkinson (reivilibre) <olivier@librepush.net>

synapse/storage/schema/delta/56/stats_separated1.sql

@@ -69,6 +69,7 @@ CREATE TABLE IF NOT EXISTS room_stats_current (
 
     current_state_events INT NOT NULL,
     total_events INT NOT NULL,
+    total_event_bytes BIGINT NOT NULL,
     joined_members INT NOT NULL,
     invited_members INT NOT NULL,
     left_members INT NOT NULL,
@@ -91,6 +92,7 @@ CREATE TABLE IF NOT EXISTS room_stats_historical (
 
     current_state_events INT NOT NULL,
     total_events INT NOT NULL,
+    total_event_bytes BIGINT NOT NULL,
     joined_members INT NOT NULL,
     invited_members INT NOT NULL,
     left_members INT NOT NULL,

synapse/storage/stats.py

@@ -36,6 +36,7 @@ ABSOLUTE_STATS_FIELDS = {
         "left_members",
         "banned_members",
         "total_events",
+        "total_event_bytes",
     ),
     "user": ("public_rooms", "private_rooms"),
 }