connman: add upstream patches (squashed)

- connman-do-not-allow-changes-if-immutable.patch
- connman-do-not-load-immutable-vpn-connections.patch
- connman-function-to-set-immutable-flag.patch
- connman-intoduce-immutable-flag-to-provider-data.patch
- connman-provisioned-vpn-connections-are-immutable.patch
- connman-rememver-the-immutable-flag.patch
- connman-send-signal-only-if-immutable-changes.patch
- connman-set-immutable-flag-of-the-vpn-service.patch
- connman-setproperty-clearproperty-does-not-wor-on-immutable.patch