Stateless tests: 02441_alter_delete_and_drop_column.sql: try to fix and add debug info

Author: fm4v

tests/queries/0_stateless/02441_alter_delete_and_drop_column.reference

@@ -1,2 +1,3 @@
+tuple()	all_0_0_0	00000000-0000-0000-0000-000000000000	Compact	1	2	2	1	all	0
 MUTATE_PART	all_0_0_0_1	['all_0_0_0']
 1	2

tests/queries/0_stateless/02441_alter_delete_and_drop_column.sql

@@ -14,13 +14,15 @@ select sleepEachRow(2) from url('http://localhost:8123/?param_tries={1..10}&quer
     ), 'LineAsString', 's String') settings max_threads=1, http_make_head_request=0 format Null;
 
 alter table mut drop column k settings alter_sync=0;
-system sync replica mut pull;
 
 -- a funny way to wait for ALTER_METADATA to disappear from the replication queue
 select sleepEachRow(2) from url('http://localhost:8123/?param_tries={1..10}&query=' || encodeURLComponent(
     'select * from system.replication_queue where database=''' || currentDatabase() || ''' and table=''mut'' and type=''ALTER_METADATA'''
     ), 'LineAsString', 's String') settings max_threads=1, http_make_head_request=0 format Null;
 
+system sync replica mut pull;
+
+select partition,name,uuid,part_type,active,marks,rows,refcount,partition_id,metadata_version from system.parts where database=currentDatabase() and table='mut';
 select type, new_part_name, parts_to_merge from system.replication_queue where database=currentDatabase() and table='mut' and type != 'GET_PART';
 system start merges mut;
 set receive_timeout=30;