Fix geoportal.lt XML schema bug

[sirex]

The issue is here:

    <gmd:MD_Metadata
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xmlns:gmd="http://www.isotc211.org/2005/gmd"
        xmlns:schemaLocation="http://www.isotc211.org/2005/gmd http://schemas.opengis.net/iso/19139/20060504/gmd/gmd.xsd">

The error is in xmlns:schemaLocation attribute. Value of the attribute should be an URL, but here two URI's separated with space are provided. The attribute value should be written as follows:

    <gmd:MD_Metadata
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xmlns:gmd="http://www.isotc211.org/2005/gmd"
        xsi:schemaLocation="http://www.isotc211.org/2005/gmd http://schemas.opengis.net/iso/19139/20060504/gmd/gmd.xsd">

[sirex]

Temporary fix:

1. Open this file:

/usr/lib/ckan/default/local/lib/python2.7/site-packages/owslib/csw.py

2. Change 586 line to:

self._exml = etree.parse(StringIO.StringIO(self.response.replace('xmlns:schemaLocation', 'xsi:schemaLocation')))