FSAL_LUSTRE/Upcalls: updates CMakeLists.txt files to switch the feature ON/OFF

Signed-off-by: Philippe DENIEL <philippe.deniel@cea.fr>
FSAL_LUSTRE/Upcalls: changes made to specfile to trigger feature at rpm build time

Signed-off-by: Philippe DENIEL <philippe.deniel@cea.fr>
FSAL_LUSTRE/Upcalls: adds include files if wanted

Signed-off-by: Philippe DENIEL <philippe.deniel@cea.fr>