package/nut: package/nut: specify --with-user/group when building NUT

This commit fixes a problem where the NUT package couldn't be
used as a NUT server due to the fact that the default group for
nobody is "nogroup" and not "nobody" like the internal default
of NUT. Thus, when starting a NUT server daemon the daemon starts
with incorrect group permissions. This commit fixes this
shortcoming by introducing a dedicated 'nut' user and 'nut' group
to drop priviledges to it.

Signed-off-by: Jens Maus <mail@jens-maus.de>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
(cherry picked from commit cd46e1b1439e854dc9e4c016795d6e5276e4c573)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/nut/nut.mk

@@ -24,7 +24,9 @@ NUT_POST_PATCH_HOOKS += NUT_FIX_CONFIGURE
 NUT_CONF_OPTS = \
 	--with-altpidpath=/var/run/upsd \
 	--with-dev \
-	--without-doc
+	--without-doc \
+	--with-user=nut \
+	--with-group=nut
 
 NUT_CONF_ENV = \
 	ax_cv_check_cflags__Werror__Wno_unknown_warning_option=no \
@@ -34,6 +36,10 @@ NUT_CONF_ENV = \
 	ac_cv_func_strncasecmp=yes \
 	ax_cv__printf_string_null=yes
 
+define NUT_USERS
+	nut -1 nut -1 * - - - NUT user
+endef
+
 ifeq ($(call qstrip,$(BR2_PACKAGE_NUT_DRIVERS)),)
 NUT_CONF_OPTS += --with-drivers=auto
 else