[SQL]Update HiveMetastoreCatalog.scala

I think it's better to defined hiveQlTable as a val

Author: baishuo(白硕) <vc_java@hotmail.com>

Closes #1569 from baishuo/patch-1 and squashes the following commits:

dc2f895 [baishuo(白硕)] Update HiveMetastoreCatalog.scala
a7b32a2 [baishuo(白硕)] Update HiveMetastoreCatalog.scala