Remove manual nat manager

[matkt]

Signed-off-by: Karim TAAM karim.t2am@gmail.com

PR description

We decided to add a manual mode during the implementation of the NatManager. This mode does not seem really useful because it does the same thing as a NONE mode (it takes the parameters p2p-host, p2p-port, etc). At the moment this mode does not bring much and seems to be confusing. To avoid confusion the best is to delete ManualNatManager

This requires an update of the documentation (https://besu.hyperledger.org/en/stable/HowTo/Find-and-Connect/Specifying-NAT/#manual)

• Remove the MANUAL part
• Change NONE part

By specifying NONE you can set the following parameters if needed:
--p2p-host and --p2p-port define the advertised host and port for the P2P service.
--rpc-http-host and rpc-http-port define the advertised host and port for the JSON-RPC service.

[AbdelStark]

Looks good to me.

[RatanRSur]

I forgot to do this in my PR so just reminding you here to write an entry in the changelog in this PR :) It will help out the docs team so they don't have to do this last minute when the release is happening.

[matkt]

I forgot to do this in my PR so just reminding you here to write an entry in the changelog in this PR :) It will help out the docs team so they don't have to do this last minute when the release is happening.

I added it in the Upcoming 1.5 release section of the CHANGELOG. feel free to tell me if it's not ok

[MadelineMurray]

Doc'd https://besu.hyperledger.org/en/latest/HowTo/Find-and-Connect/Specifying-NAT/