Testing: Python 3.* tests for clients #3032
Core & Internals: Add a quota_approver similar to rule_approver #3053
Deletion: Tunable values for max_threads by host #3081
Deletion: Reevaluate the list of RSEs to be processed by a reaper #3085
Infrastructure: docker setup issues #3038
Clients: rucio client fails if username not defined #3050