Complex type jdbc-realm in Elytron subsystem

Elytron subsystem uses complex type in jdbc-realm resource which is difficult to use and can result to bad user experience, see description of JBEAP-6100 for more details.

Complex attributes in add operation and resource description:
principal-query
attribute-mapping
clear-password-mapper
bcrypt-mapper
salted-simple-digest-mapper
simple-digest-mapper
scram-mapper