[SSSD] [PATCH] ipa-server-mode: add IPA group memberships to AD users

[Sumit Bose]

Hi,

currently in ipa-server-mode only the AD groups memberships are
available. This patch adds the IPA group memberships to trusted AD
users.

This patch is missing some unit tests for some of the helper functions.
I will send them later, but I didn't want to delay the next release.

bye,
Sumit