#691/ Adding data center gql type, query and resolver

[daniel-cy-lu]

Refer to ticket #691

Plateform API is able to make a gql query to dataCenters. Use this query for testing:

{ dataCenters { name shortName id organization email uiUrl gatewayUrl analysisSongCode analysisSongUrl analysisScoreUrl submissionSongCode submissionSongUrl submissionScoreUrl } }

jwt token is needed for this query.

Ticket Checklist

• [x] Create DataCenter type in gql schema
• [x] Add dataCenters query
• [x] Create dataCenters query resolver that will retrieve list of all data centers from ProgramService
• [x] Add listDataCenters method to the program service HTTP client that will fetch data centers from ProgramService

Type of Change

• [ ] Bug
• [x] New Feature

[daniel-cy-lu]

@demariadaniel Thanks for the review, Dan!