v1.5.2 - prep for artifact manager

[mjstealey]

Preparation for artifact manager

• [x] allow token based authorization using CM generated tokens
• [x] long lived token - stub work
  • add COU: {uuid}-tk on a per project basis
  • add token revocation list check for any endpoint that allows token access
  • add token_holders attribute to project object (format same as project_members / project_owners)
• [x] add stubs for token revocation list (TRL) in prep for v1.6
• [x] data export and restore scripts to fit updated data models
• [x] automatically manage Jupyterhub role assignment
  • if user is a project member/owner for any project, assign the role
  • if user is not a project member/owner for any project, remove the role
• [x] add option to generate SSHKey without storing the pub key contents

  {
  "comment": "string",       <-- required - string
  "description": "string",   <-- required - string
  "keytype": "sliver",       <-- required - string - one of ["bastion", "sliver"]
  "store_pubkey": boolean    <-- NEW: optional - boolean - default = true
  }

• [x] add a new announcement_type named "news" to the /announcements endpoint
  • Update: announcement_type: { type: string, enum: [ "facility", "maintenance", "news" ], default: "facility" }