modules: move Gluon packages to front of module list

To avoid getting surprised again by a (possibly incompatible) OpenWrt
package replacing one of ours, move our own feed to the front, so it has
higher precedence than openwrt/{packages,routing}.

(cherry picked from commit 9e8f5815)

modules

-GLUON_FEEDS='packages routing gluon'
+GLUON_FEEDS='gluon packages routing'
 
 OPENWRT_REPO=https://github.com/openwrt/openwrt.git
 OPENWRT_BRANCH=openwrt-22.03
 OPENWRT_COMMIT=9e8c9592d6832fd2a2d0deca6784d8b686c26dd0
 
+PACKAGES_GLUON_REPO=https://github.com/freifunk-gluon/packages.git
+PACKAGES_GLUON_COMMIT=ce2e6ac1937af9a4c5c54181ab00781a0bf0097c
+
 PACKAGES_PACKAGES_REPO=https://github.com/openwrt/packages.git
 PACKAGES_PACKAGES_BRANCH=openwrt-22.03
 PACKAGES_PACKAGES_COMMIT=b7fcfa261a809f4d268c1b16c986157983e62ab4
@@ -11,6 +14,3 @@ PACKAGES_PACKAGES_COMMIT=b7fcfa261a809f4d268c1b16c986157983e62ab4
 PACKAGES_ROUTING_REPO=https://github.com/openwrt/routing.git
 PACKAGES_ROUTING_BRANCH=openwrt-22.03
 PACKAGES_ROUTING_COMMIT=b312934dabb09a45e8ebdab371bc182230513487
-
-PACKAGES_GLUON_REPO=https://github.com/freifunk-gluon/packages.git
-PACKAGES_GLUON_COMMIT=ce2e6ac1937af9a4c5c54181ab00781a0bf0097c