Skip test_create_update_delete_unicode_project in _ldap_livetest

Live LDAP tests fail because this test doesn't work.

This failure occures on the same reason as it was with
test_create_unicode_user_name
(Ic01aa505d867c1de30e2a1ed7c79ff1478e213ef)

Related bug: 1172106

Change-Id: I0422d14c937030c39a17776e7d321bd629d50b31
Add documentation for Read Only LDAP configuration option.

This patch adds a new section for describing the Read Only
LDAP configuration option that is now available in Havana.

Closes-Bug: #1235778

Change-Id: I964d410d247083a8ff43b0177cb0b2ba920310fd
Merge "Skip test_create_update_delete_unicode_project in _ldap_livetest"
Merge "Add documentation for Read Only LDAP configuration option."