'Installs boottool on the host'

def _install_boottool(self):

    if (self._host() is None):
        raise error.AutoservError('Host    does    not    exist    anymore')
    tmpdir = self._host().get_tmp_dir()
    self._host().send_file(os.path.abspath(os.path.join(utils.get_server_dir(), BOOTTOOL_CLI_PATH)), tmpdir)
    self._boottool_path = os.path.join(tmpdir, os.path.basename(BOOTTOOL_CLI_PATH))
