interface with vrtsexplorer to capture veritas related data

def setup(self):
        """ interface with vrtsexplorer to capture veritas related data """
        r = self.call_ext_prog(self.get_option("script"))
        if r['status'] == 0:
            tarfile = ""
            for line in r['output']:
                line = line.strip()
                tarfile = self.do_regex_find_all(r"ftp (.*tar.gz)", line)
            if len(tarfile) == 1:
                self.add_copy_spec(tarfile[0])