Merge remote-tracking branch 'origin/errcode' into errcode

# Conflicts:
#	internal/rpc/msg/delete.go
#	pkg/common/db/controller/msg.go
#	pkg/common/db/table/unrelation/extend_msg_set.go

internal/push/fcm/push_test.go

@@ -9,7 +9,7 @@ import (
 )
 
 func Test_Push(t *testing.T) {
-	var redis cache.Cache
+	var redis cache.MsgCache
 	offlinePusher := NewClient(redis)
 	err := offlinePusher.Push(context.Background(), []string{"userID1"}, "test", "test", &push.Opts{})
 	assert.Nil(t, err)