luna-sysmgr-ipc-messages: make it allarch againervice2: make it TUNE_PKGARCH

* we don't use default TUNE_PKGARCH to be MACHINE_ARCH

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
luna-service2: make it TUNE_PKGARCH

* use WEBOS_LS2_SECURE to control permissions on ls2 files
* we don't want to make whole luna-service2 and all recipes depending on it MACHINE_ARCH
  just because of this

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
layer.conf: Add luna-next-conf to SIGGEN_EXCLUDERECIPES_ABISAFE

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Revert "webos.inc: Set PACKAGE_ARCH to MACHINE_ARCH even for packagegroups"

This reverts commit 8029aba9cb4b9d6e5eb398afef650a7cecdc09be.