Returns names of predefined AuthRealms' classes supported by security service.
//!!!!!!!!!!!! (hardcoded for now until ss will implement backemnd support)
return new String[]{
"com.sun.enterprise.security.auth.realm.file.FileRealm",
"com.sun.enterprise.security.auth.realm.certificate.CertificateRealm",
"com.sun.enterprise.security.auth.realm.ldap.LDAPRealm",
"com.sun.enterprise.security.auth.realm.jdbc.JDBCRealm",
"com.sun.enterprise.security.auth.realm.solaris.SolarisRealm"};