merge by xiaomi

  1. remove Index_Comment in ShowIndex function
  2. remove mysql client deps in Makefile

  1. update vendor pingcap/parser
  2. Makefile add docker contain stop wait
  3. -report-type=rewrite when syntax error, print error info not empty

  change `connect` to `docker-connect`
  add `docker-it` for attaching into container

  RES.009 not consider about "and", "or"... Operator in
  BinaryOperationExpr

 DSN 解析优化, 并支持密码特殊字符

merge by xiaomi

  RuleTimePrecision
  MySQL 5.6.4+ New time data type, support time precision to microsecond

fix #155 a new config arg 'min-cardinality' for index column selection

  column.Tp may be nil when checking

a new config arg 'min-cardinality' for index column selection

  syntax check now only use tidb parser, no vEnv dependency.

merge by xiaomi

  bit type not config as int, when two columns compare will
  give ARG.003 suggestion.

  fix #154, #157 by the way

  不建议使用连续判断
  SELECT * FROM tbl WHERE col = col = 'abc'

add COL.007 RuleMaxTextColsCount & update ARG.003 rule content

sync master

fix SetLooger && update filepath

add new heuristic rule RuleColumnNotAllowType COL.018