Signing with ledger

[faboweb]

Summary of Bug

Using LCD to send tokens signing with ledger doesn't work.

Steps to Reproduce

• build gaia v0.24.0 - c9358ec
• create ledger account using the CLI
• run LCD
• /keys shows ledger account
• POST /accounts/cosmosaccaddr18da7h02z3e46ulee5prg5zl6pr9va0yttujxet/send

{  
   "amount":[  
      {  
         "denom":"localToken",
         "amount":"10"
      }
   ],
   "sequence":"0",
   "name":"ledger",
   "password":"",
   "account_number":"1",
   "chain_id":"test-chain-caT7AI",
   "gas":"50000000"
}

• result please open Cosmos app on the Ledger device - error: error fetching public key: lost connection (ledger is open)

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[faboweb]

Signing via the CLI is also not working:

[alexanderbez]

@faboweb see my response in #2156 -- essentially I was able to sign and send txs via the CLI. However, I am able to reproduce this issue via the REST endpoint.

[faboweb]

I will test this again after #2167 is merged. Thanks for the effort. :)