Changes to Update app trial signup settings.

added the new required request property isAirgapEnabled

added the new required request property isEmbeddedClusterMultiNodeEnabled

added the new optional request property customSignupFields

added the new optional request property domainFilterDomains

added the new optional request property domainFilterMode

added the new optional request property domainFilterUseDefaultBlocklist

added the optional property settings/customSignupFields to the response with the 200 status

added the optional property settings/domainFilterDomains to the response with the 200 status

added the optional property settings/domainFilterMode to the response with the 200 status

added the optional property settings/domainFilterUseDefaultBlocklist to the response with the 200 status

added the optional property settings/isAirgapEnabled to the response with the 200 status

added the optional property settings/isEmbeddedClusterMultiNodeEnabled to the response with the 200 status