parser: create integer type field with specified length should have warings

[AilinKid]

What problem does this PR solve?

before

mysql> create table t(a bigint(2));
Query OK, 0 rows affected (0.01 sec)

after

mysql> create table t(a bigint(2));
Query OK, 0 rows affected, 1 warning (0.01 sec)

mysql> show warnings;
+---------+------+------------------------------------------------------------------------------+
| Level   | Code | Message                                                                      |
+---------+------+------------------------------------------------------------------------------+
| Warning | 1681 | Integer display width is deprecated and will be removed in a future release. |
+---------+------+------------------------------------------------------------------------------+
1 row in set (0.00 sec)

What is changed and how it works?

This is PR is part of the functionality above, it need TiDB PR to check the same warning and rewrite the error code and message.

Check List

Tests

• Integration test

[codecov]

Codecov Report

Merging #939 into master will decrease coverage by 0.08%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #939      +/-   ##
==========================================
- Coverage   78.46%   78.37%   -0.09%     
==========================================
  Files          40       40              
  Lines       14913    14786     -127     
==========================================
- Hits        11701    11589     -112     
+ Misses       2521     2509      -12     
+ Partials      691      688       -3     

[zimulala]

Could we use ErrWarnDeprecatedIntegerDisplayWidth directly?

[AilinKid]

it can't use a terror class directly in scanner here

ErrWarnDeprecatedIntegerDisplayWidth is used in TiDB to append warnings in statement context to replace the raw warning, it contains the error code 1681, error message.

the raw message is like: "You have an error in your SQL syntax; check the manual that corresponds to your TiDB version for the right syntax to use near ''%s" Integer display width is deprecated and will be removed in a future release" and the fault error code is 1064

[tangenta]

LGTM

LGT1

[AilinKid]

Cause ast.UnionStmt is removed in newer parser, but TiDB still referred the old version parser. That's why there is integation error.

[kennytm]

LGTM