sssd: disable interpolation for configparser

[pbrezina]

Otherwise using percent sign will raise an error, e.g.:

client.sssd.domain["override_homedir"] = "/home/%u"

self = <configparser.BasicInterpolation object at 0x7fe0fcb46810>
parser = <configparser.ConfigParser object at 0x7fe0fca92fd0>
section = 'domain/test', option = 'override_homedir', value = '/home/%u'

    def before_set(self, parser, section, option, value):
        tmp_value = value.replace('%%', '') # escaped percent signs
        tmp_value = self._KEYCRE.sub('', tmp_value) # valid syntax
        if '%' in tmp_value:
>           raise ValueError("invalid interpolation syntax in %r at "
                             "position %d" % (value, tmp_value.find('%')))
E           ValueError: invalid interpolation syntax in '/home/%u' at position 6

/usr/lib64/python3.11/configparser.py:403: ValueError

[pbrezina]

@danlavu this should help

[danlavu]

Works

>               assert ssh.run("pwd").stdout == f"/home/{i[1]}"
E               AssertionError: assert '/' == '/home/user1@TEST'

Thank you.