Make test independent of online XSD schema

The test still needs to access <http://www.w3.org/2009/01/xml.xsd>, but
at least we no longer depend on <http://x-road.eu/xsd/x-road.xsd>,
which may be moved again.

Author: cmb69

ext/soap/tests/bugs/bug76348.wsdl

@@ -7,7 +7,7 @@
         targetNamespace="http://example.x-road.eu/producer/">
     <types>
         <schema xmlns="http://www.w3.org/2001/XMLSchema" targetNamespace="http://example.x-road.eu/producer/">
-            <import namespace="http://x-road.eu/xsd/x-road.xsd" schemaLocation="http://x-road.eu/xsd/x-road.xsd"/>
+            <import namespace="http://x-road.eu/xsd/x-road.xsd" schemaLocation="bug76348.xsd"/>
             <import namespace="http://www.w3.org/XML/1998/namespace"
                     schemaLocation="http://www.w3.org/2009/01/xml.xsd"/>
             <element name="exampleOperation">