test not stable

[lance6716]

record broken test case here

Unit test

• testServer.TestTaskAutoResume: *: fix test and yaml suffix #895

• testForEtcd.TestInfoEtcd: test: improve stability for tests #785 dynamic increase waiting time (by retry)

• testForEtcd.TestOperationEtcd: test: improve stability for tests #785 dynamic increase waiting time (by retry), [Jenkins outdate]

• testOptimist.testOptimist: test: improve stability for tests #785 dynamic increase waiting time (by retry)

• testMockScheduler: test: improve stability for tests #785 increase lease TTL

• testForEtcd.TestWorkerKeepAlive (added notes)

• testMockScheduler (added notes)

• testSubTask.TestPauseAndResumeSubtask: test: fix TestPauseAndResumeSubtask #805

• testMaster.TestOfflineMember: master: fix unit test for OfflineMember #824

• testForEtcd.TestKeepAliveRevokeLease: [Jenkins outdate]

• testScheduler.TestRestartScheduler: test: increase TTL to improve stability #812, [Jenkins outdate]

• testMaster.TestOperateSource: test: fix TestOperateSource #883

Integration test

• dmctl_basic: [Jenkins outdate]

• ha_cases: fixed by create index concurrently lead to block tidb#18456

• shardddl1 (DM-001 failed): https://internal.pingcap.net/idc-jenkins/blue/organizations/jenkins/dm_ghpr_test/detail/dm_ghpr_test/6108/pipeline/88

• shardddl1 (Unknown database): https://internal.pingcap.net/idc-jenkins/blue/organizations/jenkins/dm_ghpr_test/detail/dm_ghpr_test/6133/pipeline/88,
  seems nothing error
  dm-filter-out-ddl-error.log,

• sharding2: test: improve stability for tests #785 dynamic increase waiting time (by retry)

• shardddl3: [Jenkins outdate]

• http_apis: [Jenkins outdate]

• sharding: test: disable task_checker for sharding test #871

• ha: [Jenkins outdate]

• sequence_sharding: [Jenkins outdate]

• load_interrupt: [Jenkins outdate]

• sequence_sharding_optimistic: [Jenkins outdate]

• dmctl_basic: worker: avoid illegal zero value of channel #868

• dmctl_command: https://internal.pingcap.net/idc-jenkins/blue/organizations/jenkins/dm_ghpr_test/detail/dm_ghpr_test/6047/pipeline/75

• drop_column_with_index: https://internal.pingcap.net/idc-jenkins/blue/organizations/jenkins/dm_ghpr_test/detail/dm_ghpr_test/6106/pipeline/71

• full_mode: https://internal.pingcap.net/idc-jenkins/blue/organizations/jenkins/dm_ghpr_test/detail/dm_ghpr_test/6201/pipeline/71, https://internal.pingcap.net/idc-jenkins/blue/organizations/jenkins/dm_ghpr_test/detail/dm_ghpr_test/6253/pipeline/71

[lance6716]

close this because most of failure is either fixed or outdated