surveyor - jetstream auth for credentials

[rossmerr]

added credentials auth for surveyor

[caleblloyd]

I think that it may be more appropriate to reference secrets, with a value in the format:

accounts:
- name: user1
  credentials:
    secret:
      name: user-creds
      key: user1.creds
- name: user2
  credentials:
    secret:
      name: user-creds
      key: user2.creds

Then we mount the secrets and reference the keys in the config, similar to how the TLS certs work

[caleblloyd]

Closing as stale