Fix broken testcases in a unit test

[ligurio]

Broken tests are (/build/test/unit_test --list_content):

[&]() { test_StartStopPosition(); }*
[&]() { test_SetBinlogPos(); }*
[&]() { test_Disconnect(); }*
[&]() { test_Stat(); }*
[&]() { test_BinlogRowImageOption(); }*
[&]() { test_InsertNullValue(); }*
[&]() { test_AlterCreateTable(); }*
[&]() { testOneFilterAllTypes(slave__eAll); }*
[&]() { testOneFilter(slave__eInsert); }*
[&]() { testOneFilter(slave__eUpdate); }*
[&]() { testOneFilter(slave__eDelete); }*
[&]() { testOneFilter(slave__eNone); }*
[&]() { testOneFilter(static_cast<slave__EventKind>(~static_cast<uint8_t>(slave__eInsert))); }*
[&]() { testOneFilter(static_cast<slave__EventKind>(~static_cast<uint8_t>(slave__eUpdate))); }*
[&]() { testOneFilter(static_cast<slave__EventKind>(~static_cast<uint8_t>(slave__eDelete))); }*

sergeyb@pony:~/sources/MRG/libslave$ ./build/test/unit_test --run_test=*test_StartStopPosition*
Running 1 test case...
Invalid Format_description event: number_of_event_types 40 > 38
Met exception in get_remote_binlog cycle. Message: Invalid Format_description event
Met exception in get_remote_binlog cycle. Message: boost::bad_any_cast: failed conversion using boost::any_cast
/home/sergeyb/sources/MRG/libslave/test/unit_test.cpp(585): error: in "[&]() { test_StartStopPosition(); }": Have no calls to libslave callback
Myslave: Error reading packet from server: Lost connection to MySQL server during query; mysql_error: 2013
Myslave: Error from MySQL: Lost connection to MySQL server during query
Binlog monitor was stopped. Binlog events are not listened.
terminate called after throwing an instance of 'std::runtime_error'
  what():  mysql_fetch_row() failed: Unknown MySQL error : 2000
unknown location(0): fatal error: in "[&]() { test_StartStopPosition(); }": signal: SIGABRT (application abort requested)
/home/sergeyb/sources/MRG/libslave/test/unit_test.cpp(585): last checkpoint

*** 2 failures are detected in the test module "Master Test Suite"
sergeyb@pony:~/sources/MRG/libslave$ 

sergeyb@pony:~/sources/MRG/libslave$ ./build/test/unit_test --run_test=*test_SetBinlogPos*
Running 1 test case...
Invalid Format_description event: number_of_event_types 40 > 38
Met exception in get_remote_binlog cycle. Message: Invalid Format_description event
Met exception in get_remote_binlog cycle. Message: boost::bad_any_cast: failed conversion using boost::any_cast
/home/sergeyb/sources/MRG/libslave/test/unit_test.cpp(585): error: in "[&]() { test_SetBinlogPos(); }": Have no calls to libslave callback
Met exception in get_remote_binlog cycle. Message: boost::bad_any_cast: failed conversion using boost::any_cast
/home/sergeyb/sources/MRG/libslave/test/unit_test.cpp(585): error: in "[&]() { test_SetBinlogPos(); }": Have no calls to libslave callback
Myslave: Error reading packet from server: Lost connection to MySQL server during query; mysql_error: 2013
Myslave: Error from MySQL: Lost connection to MySQL server during query
Binlog monitor was stopped. Binlog events are not listened.
terminate called after throwing an instance of 'std::runtime_error'
  what():  mysql_fetch_row() failed: Unknown MySQL error : 2000
unknown location(0): fatal error: in "[&]() { test_SetBinlogPos(); }": signal: SIGABRT (application abort requested)
/home/sergeyb/sources/MRG/libslave/test/unit_test.cpp(791): last checkpoint

*** 3 failures are detected in the test module "Master Test Suite"
sergeyb@pony:~/sources/MRG/libslave$ 


sergeyb@pony:~/sources/MRG/libslave$ ./build/test/unit_test --run_test=*test_Disconnect*
Running 1 test case...
Invalid Format_description event: number_of_event_types 40 > 38
Met exception in get_remote_binlog cycle. Message: Invalid Format_description event
Met exception in get_remote_binlog cycle. Message: boost::bad_any_cast: failed conversion using boost::any_cast
/home/sergeyb/sources/MRG/libslave/test/unit_test.cpp(585): error: in "[&]() { test_Disconnect(); }": Have no calls to libslave callback
Myslave: Error reading packet from server: Lost connection to MySQL server during query; mysql_error: 2013
Myslave: Error from MySQL: Lost connection to MySQL server during query
Invalid Format_description event: number_of_event_types 40 > 38
Met exception in get_remote_binlog cycle. Message: Invalid Format_description event
Met exception in get_remote_binlog cycle. Message: boost::bad_any_cast: failed conversion using boost::any_cast
/home/sergeyb/sources/MRG/libslave/test/unit_test.cpp(544): error: in "[&]() { test_Disconnect(); }": Condition variable timed out
/home/sergeyb/sources/MRG/libslave/test/unit_test.cpp(853): error: in "[&]() { test_Disconnect(); }": Have no calls to libslave callback for disconnect test
/home/sergeyb/sources/MRG/libslave/test/unit_test.cpp(490): error: in "[&]() { test_Disconnect(); }": Have invalid call count: 0 for disconnect test
unknown location(0): fatal error: in "[&]() { test_Disconnect(); }": memory access violation at address: 0x00000018: no mapping at fault address
/home/sergeyb/sources/MRG/libslave/test/unit_test.cpp(490): last checkpoint

*** 5 failures are detected in the test module "Master Test Suite"
sergeyb@pony:~/sources/MRG/libslave$