LU-14797 nodemap: map project id

LU-14797 nodemap: map project id

Add calls to nodemap_map_id() in order to map project IDs from
client ID to server ID and conversely.
Also extend nodemap_can_setquota() to allow setquota on project
only if ID is not squashed or deny_unknown is not set.
Update sanity-sec test_27a to exercise the feature.

Signed-off-by: Sebastien Buisson <sbuisson@ddn.com>
Change-Id: Id66458550d312404b1993ead8940c3d12eaadccd
Reviewed-on: https://review.whamcloud.com/44119
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Patrick Farrell <pfarrell@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>