update parser to the latest version to support RESOURCE GROUP grammar

[tiancaiamao]

Fix this error:

ERRO[0000] run test [privilege/privileges] err: sql:CREATE RESOURCE GROUP rg1 ru_per_sec=1000;: [parser:1064]You have an error in your SQL syntax; check the manual that corresponds to your TiDB version for the right syntax to use line 1 column 36 near "ru_per_sec=1000;"  
ERRO[0000] 1 tests failed         

The old parser does not support this syntax:

CREATE RESOURCE GROUP rg1 ru_per_sec=1000;

[CLAassistant]

All committers have signed the CLA.

[Defined2014]

/approve

[tiancaiamao]

/merge