Update stylesheet of the datamapper testcase
Related issue:
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:firstElementOfTheInput="company" xmlns:notXSLTCompatible="false" xmlns:own="http://ownfunction.org" xmlns:xs="http://www.w3.org/2001/XMLSchema" extension-element-prefixes="xs own notXSLTCompatible firstElementOfTheInput" version="2.0">
+<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:firstElementOfTheInput="company" xmlns:notXSLTCompatible="false" xmlns:own="http://ownfunction.org" xmlns:xs="http://www.w3.org/2001/XMLSchema" extension-element-prefixes="own notXSLTCompatible firstElementOfTheInput" exclude-result-prefixes="xs" version="2.0">
<xsl:function name="own:setPrecision">
<xsl:param name="resultString"/>
<xsl:param name="noOfDigits"/>
