'Returns the mount path prefix using the mount point base and share.
:param connection_info: dict of the form
connection_info = {
\'data\': {
\'export\': the file system share,
:returns: The mount path prefix.'

def _get_mount_path(self, connection_info):

    share = self._normalize_export(connection_info['data']['export'])
    return os.path.join(self._get_mount_point_base(), utils.get_hash_str(share))
