Add package_update / package_upgrade

Allows system to be upgraded before installing new.

ref: https://cloudinit.readthedocs.io/en/latest/reference/modules.html#package-update-upgrade-install

lib/tiny-cloud/user-data/alpine-config

@@ -3,7 +3,7 @@
 # shellcheck shell=sh
 
 INIT_ACTIONS_MAIN="$(insert_after set_hostname \
-	"userdata_bootcmd userdata_write_files userdata_ntp userdata_apk_cache userdata_apk_repositories userdata_packages" \
+	"userdata_bootcmd userdata_write_files userdata_ntp userdata_apk_cache userdata_apk_repositories userdata_package_update userdata_package_upgrade userdata_packages" \
 	$INIT_ACTIONS_MAIN)"
 INIT_ACTIONS_FINAL="$INIT_ACTIONS_FINAL userdata_runcmd"
 
@@ -163,6 +163,20 @@ init__userdata_apk_repositories() {
 	done
 }
 
+init__userdata_package_update() {
+	local update="$(get_userdata package_update)"
+	if [ "$update" = "true" ]; then
+		$MOCK apk update
+	fi
+}
+
+init__userdata_package_upgrade() {
+	local upgrade="$(get_userdata package_upgrade)"
+	if [ "$upgrade" = "true" ]; then
+		$MOCK apk upgrade
+	fi
+}
+
 init__userdata_packages() {
 	local packages="$(get_userdata packages)"
 	local pkgs=

tests/tiny-cloud-alpine.test

@@ -21,6 +21,8 @@ init_tests \
 	userdata_apk_repositories \
 	userdata_apk_repositories_version \
 	userdata_apk_repositories_version_auto_edge \
+	userdata_package_update \
+	userdata_package_upgrade \
 	userdata_packages \
 	userdata_runcmd
 
@@ -213,6 +215,30 @@ userdata_apk_repositories_version_auto_edge_body() {
 		cat etc/apk/repositories
 }
 
+userdata_package_update_body() {
+	fake_userdata_nocloud <<-EOF
+		#alpine-config
+		package_update: true
+	EOF
+	atf_check -e ignore -o ignore tiny-cloud net
+	atf_check \
+		-e match:"userdata_package_update: done" \
+		-o match:"apk update" \
+		tiny-cloud main
+}
+
+userdata_package_upgrade_body() {
+	fake_userdata_nocloud <<-EOF
+		#alpine-config
+		package_upgrade: true
+	EOF
+	atf_check -e ignore -o ignore tiny-cloud net
+	atf_check \
+		-e match:"userdata_package_upgrade: done" \
+		-o match:"apk upgrade" \
+		tiny-cloud main
+}
+
 userdata_packages_body() {
 	fake_userdata_nocloud <<-EOF
 		#alpine-config