RHSSO Operator - FQDN required for External Postgres Database connectivity

Please update documentation [1] ,[2] based on the KCS [3].

IP Address does not work. Customer has to use Fully Qualified Domain Name to make a connection to external postgres database with RH SSO operator working.

[1] https://access.redhat.com/documentation/en-us/red_hat_single_sign-on/7.6/html/server_installation_and_configuration_guide/operator#external_database
[2] https://access.redhat.com/documentation/en-us/red_hat_single_sign-on/7.5/html/server_installation_and_configuration_guide/operator#external_database
[3] https://access.redhat.com/solutions/6972373