Fix:
----
This bug is a repreat of Bug#13875534. But there were missing tests in Bug#13875534. 
Reviewed the entire sys_vars suite and added missing testcases in following tests.
              
  mysql-test/suite/sys_vars/t/auto_increment_increment_basic.test
  mysql-test/suite/sys_vars/t/auto_increment_offset_basic.t     Bug#17468295   ADD MISSING OUT-OF-BOUND TESTS FOR VARIABLES IN SYS_VAR SUITE
            
      Fix:
      ----
      This bug is a repreat of Bug#13875534. But there were missing tests in Bug#13875534. 
      Reviewed the entire sys_vars suite and added missing testcases in following tests.
                    
        mysql-test/suite/sys_vars/t/auto_increment_increment_basic.test
        mysql-test/suite/sys_vars/t/auto_increment_offset_basic.test
        mysql-test/suite/sys_vars/t/binlog_max_flush_queue_time_basic.test
        mysql-test/suite/sys_vars/t/connect_timeout_basic.test
        mysql-test/suite/sys_vars/t/host_cache_size_basic.test
        mysql-test/suite/sys_vars/t/innodb_adaptive_flushing_lwm_basic.test
        mysql-test/suite/sys_vars/t/innodb_adaptive_max_sleep_delay_basic.test
        mysql-test/suite/sys_vars/t/innodb_api_bk_commit_interval_basic.test
        mysql-test/suite/sys_vars/t/innodb_max_dirty_pages_pct_basic.test
        mysql-test/suite/sys_vars/t/interactive_timeout_basic.test
        mysql-test/suite/sys_vars/t/key_cache_block_size_basic.test
        mysql-test/suite/sys_vars/t/lock_wait_timeout_basic.test
        mysql-test/suite/sys_vars/t/read_rnd_buffer_size_basic.test
        mysql-test/suite/sys_vars/t/table_open_cache_basic.testest
  mysql-test/suite/sys_vars/t/binlog_max_flush_queue_time_basic.test
  mysql-test/suite/sys_vars/t/connect_timeout_basic.test
  mysql-test/suite/sys_vars/t/host_cache_size_basic.test
  mysql-test/suite/sys_vars/t/innodb_adaptive_flushing_lwm_basic.test
  mysql-test/suite/sys_vars/t/innodb_adaptive_max_sleep_delay_basic.test
  mysql-test/suite/sys_vars/t/innodb_api_bk_commit_interval_basic.test
  mysql-test/suite/sys_vars/t/innodb_max_dirty_pages_pct_basic.test
  mysql-test/suite/sys_vars/t/interactive_timeout_basic.test
  mysql-test/suite/sys_vars/t/key_cache_block_size_basic.test
  mysql-test/suite/sys_vars/t/lock_wait_timeout_basic.test
  mysql-test/suite/sys_vars/t/read_rnd_buffer_size_basic.test
  mysql-test/suite/sys_vars/t/table_open_cache_basic.test