update to keycloak 17

rootfs/etc/s6-overlay/s6-rc.d/keycloak/run

@@ -0,0 +1,10 @@
+#!/command/with-contenv sh
+
+exec s6-setuidgid keycloak /home/keycloak/server/bin/kc.sh start \
+	--db-url-host "$DB_HOST" \
+	--db-url-database "${DB_NAME:-keycloak}" \
+	--db-username "${DB_USER:-keycloak}" \
+	--db-password "$DB_PASSWORD" \
+	--hostname "$HOSTNAME" \
+	--http-enabled true \
+	--proxy edge

rootfs/etc/s6-overlay/s6-rc.d/keycloak/type

@@ -0,0 +1 @@
+longrun