Legal API - create staff only configurations endpoint

[argush3]

Create a staff only endpoint that allows for updating of one or more existing configuration entries.

TODOs

• [x] Create GET /configuration endpoint for updating configuration entries
• [ ] Create PUT /configuration endpoint for updating configuration entries
• [x] GET/PUT endpoints should be locked down to only allow staff users
• [ ] PUT endpoint validation
  • [ ] Returns error if one of keys to update does not exist already
  • [ ] Should handle scenario where if NUM_DISSOLUTIONS_ALLOWED is not updated with a number value, a valid HTTP response message and error code is returned
  • [ ] Validate for duplicate keys
  • [ ] Ensure NUM_DISSOLUTIONS_ALLOWED is not greater than MAX_DISSOLUTIONS_ALLOWED. MAX_DISSOLUTIONS_ALLOWED is currently set to 2000. Verify with Dylan that 2000 is the correct value.
• [ ] Add relevant units tests
  • [ ] test that checks only staff can access endpoint
  • [ ] validation related tests
  • [ ] any other relevant tests

Example GET /configurations payload

GET /configurations

{
  "configurations": [
    {
      "name": "NUM_DISSOLUTIONS_ALLOWED",
      "value": "100"
    },
    {
      "name": "DISSOLUTIONS_ON_HOLD",
      "value": false
    },
   ...
  ]
}

Example PUT /configurations payload

PUT /configurations

{
  "configurations": [
    {
      "name": "NUM_DISSOLUTIONS_ALLOWED",
      "value": "100"
    },
    {
      "name": "DISSOLUTIONS_ON_HOLD",
      "value": false
    },
   ...
  ]
}