Fix test cases which still have CKI as the maintainer

Example: https://datawarehouse.cki-project.org/kcidb/tests/redhat:2117058207_aarch64_kernel-rt-64k-debug_kcidb_tool_19839945_7

 Description: /kernel/kdump/setup-nfsdump 
 Maintainers: cki-project@redhat.com

Its hard to promote the "CKI does not own tests" message when DataWarehouse is advertising CKI as a test maintainer.

Jira: CKI-7032

Edited by Tales da Aparecida