Resolution: For role creation/deletion, use the logger 'com.tibco.tea.server.service' in debug mode. The log does not have information about Role such as Permissions, Users, Groups assigned to Role while creating it.
Then there should be
<---- tea.log -----
2015-06-12 15:45:16,634 DEBUG service [f0def153045e-14de94dc48d-76 server/agents/tea/roles ] Role 'test_role_01' created.
...
2015-06-12 15:45:38,379 DEBUG service [f0def153045e-14de94dc48d-156 server/agents/tea/roles/test_role_01 ] Role(s) 'test_role_01' deleted.
---->