Fix the format peers are added to the peering.json file

[peterokwara]

Description of change

An error shows up when trying to add peers via the command line

When the command ./hornet.sh install -p "\/ip4\/178.18.253.217\/tcp\/15600\/p2p\/12D3KooWMkDp22T9hPEz7mMaM9EgDGioiUiRxSiFKXBwt1mcHbpm" -i "gohornet\/hornet:1.0.3" is run where /ip4/178.18.253.217/tcp/15600/p2p/12D3KooWMkDp22T9hPEz7mMaM9EgDGioiUiRxSiFKXBwt1mcHbpm is the peer address (forward slashes have been added in the actual command so that sed can be able to process it without errors)

An error shows up, saying Invalid config peer address

This is because of the line https://github.com/iotaledger/one-click-tangle/blob/afb1bd878d2ad2a0c62fcfa423ffe24ce7f17300/hornet-mainnet/hornet.sh#L96 here there are two extra curly braces which mess up the peering.json configuration.

Instead of the correct format, according to the documentation here https://hornet.docs.iota.org/post_installation/peering.html#adding-node-peers

{
   "peers":[
      {
         "alias":"peer1",
         "multiAddress":"/ip4/178.18.253.217/tcp/15600/p2p/12D3KooWMkDp22T9hPEz7mMaM9EgDGioiUiRxSiFKXBwt1mcHbpm"
      }
   ]
}

We have

{
   "peers":[
      {
         "alias":"peer1"
      },
      {
         "multiAddress":"/ip4/178.18.253.217/tcp/15600/p2p/12D3KooWMkDp22T9hPEz7mMaM9EgDGioiUiRxSiFKXBwt1mcHbpm"
      }
   ]
}

Which makes alias and multiaddress as two separate peers instead of one. This PR attempts to fix this issue.

Type of change

• Bug fix (a non-breaking change which fixes an issue)

How the change has been tested

1. Clone the repository
2. Remove the existing config.json in the one-click-tangle/hornet-mainnet/config/config.json file and add the latest config file found here
3. Edit the config.json file to change the dasboard.bindAddress to 0.0.0.0:8081 instead of localhost:8081 and also change the dashboard.auth.passwordHash and the dashboard.auth.passwordSalt respectively so that you are able to log in to the dashboard.
4. Edit the hornet.sh file located in the one-click-tangle/hornet-mainnet/ line https://github.com/iotaledger/one-click-tangle/blob/afb1bd878d2ad2a0c62fcfa423ffe24ce7f17300/hornet-mainnet/hornet.sh#L96 to sed -i 's/\[\]/\[{"alias": "peer1","multiAddress": "'$peer'"}\]/g' config/peering.json
5. Install the hornet configuration by running ./hornet.sh install -p "\/ip4\/178.18.253.217\/tcp\/15600\/p2p\/12D3KooWMkDp22T9hPEz7mMaM9EgDGioiUiRxSiFKXBwt1mcHbpm" -i "gohornet\/hornet:1.0.3"
6. Check dashboard to see if the node is running, and the peer that you added exists in the peering.json file, and that the node is synching and after synching becomes healthy.

Change checklist

• [x] I have performed a self-review of my own code