sentinel-i_agree_with_eula: New package to agree with eula

Use case for this package is either someone that doesn't have WebUI and
want to collect data or routers in special setups like contracts. It is
easy to influence package selection for contracted routers, but much
harder to influence uci settings.

collect/sentinel/sentinel-i_agree_with_eula/Makefile

+#
+## Copyright (C) 2019-2020 CZ.NIC z.s.p.o. (https://www.nic.cz/)
+#
+## This is free software, licensed under the GNU General Public License v3.
+# See /LICENSE for more information.
+#
+
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=sentinel-i_agree_with_eula
+PKG_VERSION:=1
+PKG_RELEASE:=1
+PKG_MAINTAINER:=CZ.NIC <packaging@turris.cz>
+
+include $(INCLUDE_DIR)/package.mk
+
+define Package/sentinel-i_agree_with_eula
+  SECTION:=collect
+  CATEGORY:=Collect
+  SUBMENU:=Sentinel
+  TITLE:=Package that accepts EULA
+  DEPENDS:=+sentinel-proxy +sentinel-eula
+endef
+
+Build/Compile:=:
+
+define Package/i_agree_with_eula/install
+	$(INSTALL_DIR) $(1)/etc/uci-defaults
+	sed 's|@VERSION@|$(PKG_VERSION)|g'  ./files/i_agrre_with_eula > $(1)/etc/uci-defaults/10_i_agrre_with_eula
+endef
+
+define Package/sentinel-i_agree_with_eula/prerm
+#!/bin/sh
+[ -n "$${IPKG_INSTROOT}" ] || {
+  if [ "$$(uci -q get sentinel.main.agreed_with_eula_version)" = $(PKG_VERSION) ]; then
+    uci -q batch <<EOF
+      delete sentinel.main.agreed_with_eula_version
+      commit sentinel.main
+    EOF
+  fi
+}
+endef
+
+$(eval $(call BuildPackage,sentinel-i_agree_with_eula))

collect/sentinel/sentinel-i_agree_with_eula/files/i_agrre_with_eula

+#!/bin/sh
+
+uci -q batch <<EOF
+  set sentinel.main.agreed_with_eula_version=@VERSION@
+  commit sentinel.main.agreed_with_eula_version
+EOF