gluon-core: convert all initial scripts to invariant scripts

...n-core/files/lib/gluon/upgrade/core/initial/001-sysconfig

...ore/files/lib/gluon/upgrade/core/initial/010-gluon-system

...re/files/lib/gluon/upgrade/core/initial/011-gluon-network

...on-core/files/lib/gluon/upgrade/core/initial/020-wireless

...n-core/files/lib/gluon/upgrade/core/invariant/001-upgrade

...re/files/lib/gluon/upgrade/core/invariant/010-primary-mac

...ore/files/lib/gluon/upgrade/core/invariant/020-interfaces

...on-core/files/lib/gluon/upgrade/core/invariant/030-system

...n-core/files/lib/gluon/upgrade/core/invariant/100-dnsmasq

...n-core/files/lib/gluon/upgrade/core/invariant/110-network

...re/files/lib/gluon/upgrade/core/invariant/120-ntp-servers

.../files/lib/gluon/upgrade/core/invariant/130-reboot-on-oom

...files/lib/gluon/upgrade/core/invariant/140-firewall-rules

...-core/files/lib/gluon/upgrade/core/invariant/200-wireless

...n-core/files/lib/gluon/upgrade/core/invariant/999-version