The catalog-db-adapter reads the initial configuration from 

/app/config/override.yaml

...

cloud_config:
   identity_services:

         ...

The problem is that the values 

project_domain_name: "xyz_domain"
user_domain_name: "xyz_domain"

are not picked up and put into the table entry 

This is because they are "filtered" out in the class 

./adapters/mso-catalog-db-adapter/src/main/java/db/migration/R__CloudConfigMigration.java

migrateCloudIdentity() method

This should be updated to set the entries PROJECT_DOMAIN_NAME | USER_DOMAIN_NAME