mgmt: update to latest

Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>
Makefile: remove gradle from main Makefile

As pointed by https://github.com/cloudius-systems/osv/issues/119 mgmt
should not be placed under module/mgmt but mgmt should be treated as a
module.

The config.json will now point to mgmt and the Makefile under mgmt will
take care of running the gradle

Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>
Module: move module/mgmt to mgmt

As pointed by https://github.com/cloudius-systems/osv/issues/119
module/mgmt should be placed under mgmt

This complete the move by deleting the files

Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>