Bug Description:  Attempting to add/modify/delete nsds5ReplicaProtocolTimeout
                  results in an error 53 (unwilling to perform).

Fix Description:  Allow nsds5ReplicaProtocolTimeout to be updated in agreements
                  and the replica configuration.  Also, made the config timeout
                  setting dynamic.

https://fedorahosted.org/389/ticket/47620

Reviewed by: rmeggins(Thanks!)
(cherry picked from commit 58fca2c4e4f2120cb6e5fb249008be8f551e944c)
(cherry picked from commit 490360fd96121d06fa8813e182b44d045257be98)