Disable external access, does not remove external_public_agent_hostname requirement

[a-nldisr]

Setting external_access enabled to false does not remove the requirement for a filled in external_public_agent_hostname.

JSON snippet example

  "external_access": {
      "enabled": false,
      "external_public_agent_hostname": "shouldnothavetofillthisin.com"
    }

Removing the external_public_agent_hostname gives:

Expecting a string here

[vishnu2kmohan]

This is mandatory for now and will be optional in the next release.

[vishnu2kmohan]

@a-nldisr We've released a new version 1.3.0-0.35.4 of the service and it's now renamed to beta-mesosphere-jupyter-service in the DC/OS Catalog

Please give this new version a spin and let me know if it resolves your issues.