HIVE-8575 : CBO: decimal_udf is broken by recent changes (and other tests have type changes) (Sergey Shelukhin, reviewed by Laljo John Pullokkaran)

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/branch-0.14@1634710 13f79535-47bb-0310-9956-ffa450edef68