[AM - IDP] When using an internal API for AM no validation of the requests payload it provided.

[marijatimovska]

1. 1. 💥 Describe the bug
      When we want to change for example an IDP in AM using PUT request there is no validation for the payload and we always get a successful 200.

URLs used:

• https://am.gravitee.io/management/organizations/DEFAULT/environments/DEFAULT/domains/
  /identities/
  
  Method: PUT: Payload: ``` { "name": "GoogleTest", "configuration": " {"clientId":10}

  ", "mappers": {}, "roleMapper": {}, "domainWhitelist": [ "gmail.com" ] } { "name": "GoogleTest", "configuration": "

  {"clientId":"926296498186-e6gss9ml80d34qgnes1t0t04naduun4b.apps.googleusercontent.com","clientSecret":"********","encodeRedirectUri":false,"connectTimeout":-10000,"idleTimeout":10000,"maxPoolSize":200,"storeOriginalTokens":false}

  ", "mappers": {}, "roleMapper": {}, "domainWhitelist": [ "gmail.com" ] } ```   ## 🌄 To Reproduce Steps to reproduce the behaviour: 1. Chose an IDP used on your end and use the above data. On my end I tested with Google IDP. ## 🌈 Expected behavior: We should be able to only send correct data. ## 💻 Desktop: Please complete the following information: - Environment: [e.g. 3.10.x] - OS: [e.g. iOS] - Browser [e.g. chrome, safari] ## ⚠️ Potential impacts: What are the impacted versions? - 3.19.X