Shared ssh key to create machines

[Barnabas Busa]

When used a shared ssh key to create a new infra, the ansible script will work till the point of root login is disabled.

Workaround would be to create a new user e.g: ethpandaops and add the shared ssh key as its pubkey, and add ethpandaops github user as a member whose keys will always be present on all our machines.

[Rafael Matias]

Added the shared key to authorized_keys ( See 4844 testnet repo ). That should be enough.