Fix tabular output for unrecognized errors

[sponomarev]

"table" package is strict about data and fails on inconsistent rows dimension.

For that kind of composition error

[
  {
    message: 'Field "Mutation.createSomething" can only be defined once.'
  }
]

service:check ends up with an exception

Error: Table must have a consistent number of cells.
    at validateTableData (~/Projects/sandbox/node_modules/table/dist/validateTableData.js:47:15)
    at Object.table (~/Projects/sandbox/node_modules/table/dist/table.js:96:34)
    at ServiceCheck.run (~/Projects/sandbox/node_modules/apollo/lib/commands/service/check.js:326:30)

• Update CHANGELOG.md* with your change (include reference to issue & this PR)
• Make sure all of the significant new logic is covered by tests
• Rebase your changes on master so that they can be merged easily
• Make sure all tests and linter rules pass

[apollo-cla]

@sponomarev: Thank you for submitting a pull request! Before we can merge it, you'll need to sign the Apollo Contributor License Agreement here: https://contribute.apollographql.com/

[sponomarev]

Closed in favor of #1806