Rethink permission requirements for Admin API DescribeCluster endpoint

[mantas-sidlauskas]

Context

Cadence WEB is using admin.DescribeCluster API call to check if advanced visibility options are available for a cluster.
All admin.* calls require admin level token when OAuth is enabled. This makes WEB unusable for a user who has only "read" level access to specific domain(s).

There are multiple options how to resolve this issue:

• Change DescribeCluster to require read level, you can't change anything anyway
• Move this endpoint to "Frontend" API, change WEB to request Frontend API

[d-vignesh]

Hi @demirkayaender , does this require backend or frontend change. If backend, i would like to work on this, can you please provide some context on what are the required changes here.