topgun: Fix regex to support bosh 6.x
topgun: Fix regex to support bosh 6.x

- This fixes an issue with the 2 regexes that get the bosh instances and
jobs, since an extra field was added after bosh 6.
- This will also be backwards compatible.
- related concourse/ci#278

Signed-off-by: JT Archie <490a930afc9c4c60b7df4eac3c3d185c0e91dd4f@pivotal.io>
Co-authored-by: Bishoy Youssef <9b4d1ba1708a9b42aa1e22343aa1f23ecf97ab43@pivotal.io>

concourse/concourse,concourse/concourse,concourse/concourse,concourse/concourse,concourse/concourse