Title: #951: sdap: Add randomness to ldap connection timeout
In case of mass deployment, mass registration of IPA clients roughly on
the same time leads to regular CPU load spikes on IPA servers, the load
spikes are caused by all/most clients refreshing their LDAP connections
(ldap_connection_expire_timeout) every 15 minutes.
This patch introduces new random value (from 0 up to
ldap_connection_expire_offset) that is added to the timeout.
To pull the PR as Git branch:
git remote add ghsssd https://github.com/SSSD/sssd
git fetch ghsssd pull/951/head:pr951
git checkout pr951