debian-archive-keyring: add new package

Grab debian-archive-keyring from debian.org to easy use of debootstrap.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>

admin/debian-archive-keyring/Makefile

+include $(TOPDIR)/rules.mk
+include $(INCLUDE_DIR)/kernel.mk
+
+PKG_NAME:=debian-archive-keyring
+PKG_VERSION:=2019.1
+PKG_RELEASE:=1
+
+PKG_SOURCE:=debian-archive-keyring_2019.1_all.deb
+PKG_SOURCE_URL:=http://ftp.debian.org/debian/pool/main/d/debian-archive-keyring/
+PKG_HASH:=9cefd8917f3d97a999c136aa87f04a3024408b5bc1de470de7d6dfa5e4bd4361
+PKG_BUILD_DIR:=$(BUILD_DIR)/$(PKG_NAME)-$(PKG_VERSION)
+
+PKG_MAINTAINER:=Daniel Golle <daniel@makrotopia.org>
+PKG_LICENSE:=Unique
+PKG_LICENSE_FILES:=usr/share/doc/debian-archive-keyring/copyright
+
+include $(INCLUDE_DIR)/package.mk
+
+define Package/debian-archive-keyring
+  SECTION:=admin
+  CATEGORY:=Administration
+  TITLE:=Debian Archive keyring
+  URL:=https://salsa.debian.org/release-team/debian-archive-keyring
+  PKGARCH:=all
+endef
+
+define Build/Prepare
+	$(AR) p $(DL_DIR)/$(PKG_SOURCE) data.tar.xz | $(TAR) -xJC $(PKG_BUILD_DIR)
+endef
+
+define Build/Configure
+endef
+
+define Build/Compile
+endef
+
+define Package/debian-archive-keyring/install
+	$(INSTALL_DIR) $(1)/usr/share/keyring
+	$(INSTALL_DATA) $(PKG_BUILD_DIR)/usr/share/keyrings/*.gpg $(1)/usr/share/keyring
+endef
+
+$(eval $(call BuildPackage,debian-archive-keyring))