v18.2.4
qa: move log-rotate config to common yaml
qa: add upgrade test for volume upgrade from legacy
qa: add tests for client features
test: Add test for mgr hang when osd is full
qa: test standby-replay with fs:workloads
qa: use more OSDs for workload tests
qa: use 4 clients for volumes testing
qa: migrate multimds workloads to fs:workloads
qa: merge multimds:thrash to fs:thrash