How to configure jaas realms / login modules in Fuse 7 ?

Hi, I'd like somebody co confirm, what will be supported way of configuring JAAS Realms in Fuse 7.

Fuse 6.x (Karaf 2.x)

User would create blueprint.xml with jaas:config section and deploy it as a bundle or xml into fuse.
Red Hat Documentation: https://access.redhat.com/documentation/en/red-hat-jboss-fuse/6.3/single/security-guide#ESBSecureJAASRealmDef

Upstream github sources for karaf / jaas / modules:
https://github.com/apache/karaf/tree/karaf-2.3.x/jaas/modules/src/main/java/org/apache/karaf/jaas/modules

Found login modules:

• jdbc/JDBCLoginModule.java
• ldap/LDAPLoginModule.java
• osgi/OsgiConfigLoginModule.java
• properties/PropertiesLoginModule.java
• publickey/PublickeyLoginModule.java
• syncope/SyncopeLoginModule.java

Fuse 7 (Karaf 4.x)

Upstream documentation: https://karaf.apache.org/manual/latest/#_security_framework

Upstream github sources for karaf / jaas / modules:
https://github.com/apache/karaf/tree/master/jaas/modules/src/main/java/org/apache/karaf/jaas/modules

Found login modules:

• audit/FileAuditLoginModule.java
• audit/LogAuditLoginModule.java
• audit/EventAdminAuditLoginModule.java
• jdbc/JDBCLoginModule.java
• krb5/Krb5LoginModule.java
• ldap/LDAPLoginModule.java
• ldap/GSSAPILdapLoginModule.java
• osgi/OsgiConfigLoginModule.java
• properties/PropertiesLoginModule.java
• properties/DigestPasswordLoginModule.java
• publickey/PublickeyLoginModule.java
• syncope/SyncopeLoginModule.java

Compared with Karaf 2.x there is new login module for Krb5 and GSSAPI.

Questions:

• Will configuration of JAAS Realms remain the same in Fuse 7 (declare blueprint.xml with jaas:config section) ?
• Can we expect Keycloak login module (configurable by blueprint jaas:config section) ?
• Karaf 2.x used karaf-jaas-modules.xml for "publishing" default jaas realms to container. Karaf 4.x doesn't blueprint for this. How does this change affect Fuse 7 ?