Changes to List domains

added ResourceIdentifier to the app request property allOf list

added ResourceIdentifier to the environment request property allOf list

added ResourceIdentifier to the project request property allOf list

the app request property type changed from string to no type

the environment request property type changed from string to no type

the project request property type changed from string to no type

the request property app became optional

the request property environment became optional

the request property project became optional

the app request property's minLength was decreased from 3 to 0

the environment request property's minLength was decreased from 3 to 0

the project request property's minLength was decreased from 3 to 0

removed the pattern ^[a-zA-Z0-9_-]+$ from the request property app

removed the pattern ^[a-zA-Z0-9_-]+$ from the request property environment

removed the pattern ^[a-zA-Z0-9_-]+$ from the request property project

added the non-success response with the status 503

added the optional property data/items/domainConnect to the response with the 200 status

endpoint added