zos remote debugging capabilities

[zaibon]

[maxux]

We need (and already have) a debug/production initramfs.

• Debug release is the one we know and use for now
• Release will drop:
  • init-debug which enable overlay feature
  • openssh server and keys
  • debugfs tool

Release image already drop some stuff but not everything.

To enable ssh or debug stuff on the node, tools should be started in a container which have access to the host.

[maxux]

In order to reach system diagnostic files, we need to upload them somewhere or make them available, whatever the way.

We suggested to upload archive to the explorer (archive would be around 50-200K), but there is nothing yet supporting this.

[xmonader]

remote debugging been removed for mainnet #1597