DP: Add Generic DP Request Probes
Add the ability to analyze performance and monitor Data Provider
requests at a high-level, probes fire when a request is sent and when
a request is completed.
Request name, domain, target, method, and return code information
is passed as target variables to the systemtap probe tapsets which
can be used in systemtap scripts.
Resolves:
https://pagure.io/SSSD/sssd/issue/3061
Reviewed-by: Jakub Hrozek <jhrozek@redhat.com>