In Python 3, python-ldap no longer allows bytes for some fields (DNs,
RDNs, attribute names, queries). Instead, text values are represented
as str, the Unicode text type. Compatibility support is provided for
Python 2 by setting bytes_mode=False [1].
Update the keystone LDAP backend to adhere to this behavior by using
bytes_mode=False for Python 2 and dropping UTF-8 encoding and decoding
fields that are now represented as text in python-ldap.
[1] More details about byte/str usage in python-ldap can be found at:
http://www.python-ldap.org/en/latest/bytes_mode.html#bytes-mode
Note that at a minimum python-ldappool 2.3.1 is required. For more
details see Depends-On's below.
Change-Id: Ifdd0644cd7042407a008c85c0b2c40a971c90bc3
Closes-Bug: #1798184
Depends-On: https://review.openstack.org/611401
Depends-On: https://review.openstack.org/613632
Depends-On: https://review.openstack.org/614052
eca0829c4c