refactor roller.toml config to follow this:

[artemijspavlovs]

[DA]
  http_endpoint = "mocha.mzonder.com"
  grpc_port = 9090
  rpc_port = 26657 # use port 443 for https rpc endpoint
  state_nodes = [
     { http_endpoint = "mocha.artpav.dev", grpc_port = 9090, rpc_port = 26657 }
     { http_endpoint = "mocha.pavlabs.dev", grpc_port = 9090, rpc_port = 443 }
  ]