Updated openstack/openstack
Project: openstack-dev/devstack  89d378e4bb40c31082481326c7778eda7ae24d6d

Install ldappool when LDAP is enabled

Keystone expects ldappool to be installed when using the LDAP backend.

Change-Id: I35e6585ec8416153ed6d0c6fa8c10c992bf0de6d
Closes-Bug: #1373750