package/sudo: new config to add sudo group and rule

Signed-off-by: Stephan Henningsen <stephan+buildroot@asklandd.dk>
[yann.morin.1998@free.fr:
  - drop the conditional creation
  - uid -is -'- when username is
  - leading TAB in user table, squeeze other spaces
]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

package/sudo/sudo.mk

@@ -70,4 +70,13 @@ define SUDO_REMOVE_DIST_EXAMPLES
 endef
 SUDO_POST_INSTALL_TARGET_HOOKS += SUDO_REMOVE_DIST_EXAMPLES
 
+define SUDO_USERS
+	- - sudo -1 - - - -
+endef
+
+define SUDO_ENABLE_SUDO_GROUP_RULE
+	$(SED) '/^# \%sudo\tALL=(ALL) ALL/s/^# //' $(TARGET_DIR)/etc/sudoers
+endef
+SUDO_POST_INSTALL_TARGET_HOOKS += SUDO_ENABLE_SUDO_GROUP_RULE
+
 $(eval $(autotools-package))