update BYOC docs

[robert-s-lee]

update https://docs.grid.ai/platform/upgrades/adding-custom-cloud-credentials the following:

• refresh examples from the output of terraform output -json | jq to reflect external id and role arn
• add grid edit
• add grid clusters log

[robert-s-lee]

 % terraform output -json | jq
{
  "external_id": {
    "sensitive": true,
    "type": "string",
    "value": "xxxx"
  },
  "role_arn": {
    "sensitive": false,
    "type": "string",
    "value": "arn:aws:iam::xxxx:role/grid-cloudxxxx"
  }
}

[robert-s-lee]

export EXTERNAL_ID=$(terraform output -json | jq -r '.external_id.value')
export ROLE_ARN=$(terraform output -json | jq -r '.role_arn.value')

echo $EXTERNAL_ID
echo $ROLE_ARN

[essiequoi]

@robert-s-lee just seeing this issue. is it still relevant?

[essiequoi]

This is being update in new version of docs