Avoid unexpected gpkg test success with older GDAL versions

Author: nyalldawson

tests/src/python/test_provider_ogr_gpkg.py

@@ -162,7 +162,7 @@ def testBug15351_commit_closeProvider_closeIter(self):
     def testBug15351_commit_closeIter_closeProvider(self):
         self.internalTestBug15351('commit_closeIter_closeProvider')
 
-    @unittest.expectedFailure(int(gdal.VersionInfo('VERSION_NUM')) < GDAL_COMPUTE_VERSION(2, 1, 2))
+    @unittest.skip(int(gdal.VersionInfo('VERSION_NUM')) < GDAL_COMPUTE_VERSION(2, 1, 2))
     def testGeopackageExtentUpdate(self):
         ''' test http://hub.qgis.org/issues/15273 '''
         tmpfile = os.path.join(self.basetestpath, 'testGeopackageExtentUpdate.gpkg')