[SSSD] [sssd PR#133][opened] sbus: use sss_ptr_hash for hash tables

[fidencio]

URL: https://github.com/SSSD/sssd/pull/133
Author: pbrezina
 Title: #133: sbus: use sss_ptr_hash for hash tables
Action: opened

PR body:
"""
This patch reuses `sss_ptr_hash` module introduced in NSS patches in `sbus` code.
"""

To pull the PR as Git branch:
git remote add ghsssd https://github.com/SSSD/sssd
git fetch ghsssd pull/133/head:pr133
git checkout pr133