Request: Debian-11 Java enablement

[Shirocco88]

some files have to be adapted to enable Java for Debian-11
e.g.
###susemanager-sync-data/additional_products.json
###java/code/src/com/suse/manager/reactor/utils/test/productdata/additional_products.json
...
java/code/src/com/redhat/rhn/domain/server/ServerConstants.java
java/code/src/com/redhat/rhn/domain/server/MinionServer.java ??
java/spacewalk-java.changes

Testsuite:
testsuite/features/build_validation/core/allcli_sanity.feature
testsuite/features/support/constants.rb
testsuite/features/support/twopence_init.rb
testsuite/features/build_validation/init_clients/debian11_minion.feature
testsuite/features/build_validation/init_clients/debian11_ssh_minion.feature
testsuite/features/build_validation/reposync/srv_sync_all_products.feature
###testsuite/features/build_validation/add_custom_repositories/srv_common_channels.feature
testsuite/features/build_validation/create_bootstrap_repositories/srv_create_bootstrap_repositories.feature

associated issues:
#4109 Request: Basic Support for Debian 11 as clients enhancement
#4108 Request: Please add Uyuni-Client-Tools (salt-minion) for Debian-11 (Bullseye) enhancement

[Shirocco88]

added Link to corresponding PR #4180