Tests fixes (that was found by stress tests)

Fix log_comment for *.sh in clickhouse-test

Evaluate yet another memcpy

Fix SIGSEGV on not existing attributes from ip_trie with access_to_key_from_attributes

PODArray swap fix

setdefault will set it only once

Fix error message in clickhouse-test

Added Grant, Revoke and System query_kind for system.query_log

DictionaryStructure fix non unique attribute names

If INSERT was failed then WATCH EVENTS will hang:

    2021.03.12 23:45:33.666223 [ 1901 ] {} <Trace> DynamicQueryHandler: Request URI: /?allow_experimental_live_view=1&query=WATCH%20test.lv%20EVENTS
    ...
    2021.03.12 23:45:34.119465 [ 35492 ] {55f2c8ec-df9f-4e97-9acc-385ed5b5fde2} <Error> executeQuery: Code: 241, e.displayText() = DB::Exception: Memory limit (for user) exceeded: would use 153.99 MiB (attempt to allocate chunk of 4194729 bytes), maximum: 150.00 MiB (version 21.4.1.6239) (from [::1]:43910) (in query: INSERT INTO test.mt VALUES ), Stack trace (when copying this message, always include the lines below):
    ...

Hung check:

    elapsed:              597.835824299
    is_cancelled:         0
    query:                WATCH test.lv EVENTS
    thread_ids:           [1901]

gdb:

    Thread 133 (Thread 0x7f26ac95b700 (LWP 1901)):
    0  0x00007f2793d447b1 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
    1  0x0000000008cbd5c5 in __tsan::call_pthread_cancel_with_cleanup(int (*)(void*, void*, void*), void*, void*, void*, void (*)(void*), void*) ()
    2  0x0000000008c4f134 in cond_wait(__tsan::ThreadState*, unsigned long, __tsan::ScopedInterceptor*, int (*)(void*, void*, void*), void*, void*, void*) ()
    3  0x0000000008c4f339 in pthread_cond_timedwait ()
    4  0x000000001831c8b6 in std::__1::__libcpp_condvar_timedwait (__cv=0x7b5801053520, __m=0x189, __ts=0x7f26ac9132b8) at ../contrib/libcxx/include/__threading_support:442
    5  std::__1::condition_variable::__do_timed_wait (this=0x7b5801053520, lk=..., tp=...) at ../contrib/libcxx/src/condition_variable.cpp:74
    6  0x00000000134fe7f2 in std::__1::condition_variable::wait_for<long long, std::__1::ratio<1l, 1000000l> > (this=this@entry=0x7b5801053520, __lk=..., __d=...) at ../contrib/libcxx/include/__mutex_base:462
    7  0x00000000134fe2c9 in DB::LiveViewEventsBlockInputStream::tryReadImpl (this=this@entry=0x7b5c0070ff98, blocking=false) at ../src/Storages/LiveView/LiveViewEventsBlockInputStream.h:180
    8  0x00000000134fd6e4 in DB::LiveViewEventsBlockInputStream::readImpl (this=0x189) at ../src/Storages/LiveView/LiveViewEventsBlockInputStream.h:115
    9  0x0000000012285593 in DB::IBlockInputStream::read (this=0x7b5c0070ff98) at ../src/DataStreams/IBlockInputStream.cpp:58
    10 0x00000000122afc7e in DB::copyDataImpl<std::__1::function<bool ()> const&, std::__1::function<void (DB::Block const&)> const&>(DB::IBlockInputStream&, DB::IBlockOutputStream&, std::__1::function<bool ()> const&, std::__1::function<void (DB::Block const&)> const&) (from=..., to=..., is_cancelled=..., progress=...) at ../src/DataStreams/copyData.cpp:26
    11 0x00000000122af8e1 in DB::copyData(DB::IBlockInputStream&, DB::IBlockOutputStream&, std::__1::function<bool ()> const&, std::__1::function<void (DB::Block const&)> const&) (from=..., to=..., is_cancelled=..., progress=...) at ../src/DataStreams/copyData.cpp:73
    12 0x0000000012cfc5e2 in DB::executeQuery(DB::ReadBuffer&, DB::WriteBuffer&, bool, DB::Context&, std::__1::function<void (std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&)>) (istr=..., ostr=..., allow_into_outfile=false, context=..., set_result_details=...) at ../src/Interpreters/executeQuery.cpp:1033
    13 0x000000001357941d in DB::HTTPHandler::processQuery (this=this@entry=0x7b1c006f41b0, context=..., request=..., params=..., response=..., used_output=..., query_scope=...) at ../src/Server/HTTPHandler.cpp:772
    14 0x000000001357c507 in DB::HTTPHandler::handleRequest (this=<optimized out>, request=..., response=...) at ../src/Server/HTTPHandler.cpp:910
    15 0x00000000135f3081 in DB::HTTPServerConnection::run (this=<optimized out>) at ../src/Server/HTTP/HTTPServerConnection.cpp:48
    16 0x00000000161f9e73 in Poco::Net::TCPServerConnection::start (this=0x7b8c01554000) at ../contrib/poco/Net/src/TCPServerConnection.cpp:43
    17 0x00000000161fa59f in Poco::Net::TCPServerDispatcher::run (this=<optimized out>) at ../contrib/poco/Net/src/TCPServerDispatcher.cpp:113
    18 0x0000000016361732 in Poco::PooledThread::run (this=<optimized out>) at ../contrib/poco/Foundation/src/ThreadPool.cpp:199
    19 0x000000001635fcd0 in Poco::(anonymous namespace)::RunnableHolder::run (this=<optimized out>) at ../contrib/poco/Foundation/src/Thread.cpp:55
    20 0x000000001635e4d8 in Poco::ThreadImpl::runnableEntry (pThread=0x7b5400082538) at ../contrib/poco/Foundation/src/Thread_POSIX.cpp:345
    21 0x0000000008c4e36d in __tsan_thread_start_func ()
    22 0x00007f2793d3d609 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
    23 0x00007f2793c64293 in clone () from /lib/x86_64-linux-gnu/libc.so.6

Cc: @vzakaznikov

https://clickhouse-test-reports.s3.yandex.net/21692/481d897cadb6b1a309478f24a46efe506b7108d6/functional_stateless_tests_flaky_check_(address).html#fail1

Fixes 01294_lazy_database_concurrent_recreate_reattach_and_show_tables

Found in [1]:

    2021.03.12 23:32:58.897190 [ 436606 ] {97a08a8f-4630-44f8-ba18-a94c6fabbded} <Information> test_13.lc_empty_part_bug: Waiting mutation: mutation_3.txt
    ...
    2021.03.12 23:32:58.900444 [ 374 ] {} <Debug> test_13.lc_empty_part_bug: Current max source part size for mutation is 0 but part size 1. Will not mutate part all_1_1_0_2. Max size depends not only on available space, but also on settings 'number_of_free_entries_in_pool_to_execute_mutation' and 'background_pool_size'
    ...

Hang check:

    query:                alter table lc_empty_part_bug modify column s LowCardinality(String);
    elapsed:              2156.396613506

  [1]: https://clickhouse-test-reports.s3.yandex.net/21511/d7d9638ceb6bd702f34a88ee54f8f83197e90af5/stress_test_(address).html#fail1

Found with fuzzer [1]:

  [1]: https://clickhouse-test-reports.s3.yandex.net/21674/2e99dad56213413a72969d47650050b42cbcc073/fuzzer_asan/report.html#fail1

{} was not replaced:

    Cannot get server pid with {}, got {}: {} lsof -i tcp:9000 -s tcp:LISTEN -Fp | awk '/^p[0-9]+$/{print substr($0, 2)}' b'306\n1025011\n' invalid literal for int() with base 10: b'306\n1025011\n'

Fix fsync_part_directory for horizontal merge

ExecutablePool fix default max execution time setting

DOCSUP-7100: Edit and translate to Russian (AVG function)