Fix sssd issue for ldblibdir, systemd, pam etc.
* fix ldblibdir which is not calculated right for cross compile
* create directory /var/log/sssd which is required by sssd daemon
* disable building python2 binding
* fix pam module path
* update systemd configure options and service files
Signed-off-by: Kai Kang <kai.kang@windriver.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
Kai Kang