*: upgrade etcd to v3.5.15 #21325

Job	Run time
chunks (1, Unit Test(1))	5m 10s
chunks (1, Unit Test(1))	5m 10s
chunks (1, Unit Test(1))	5m 10s
chunks (2, Unit Test(2))	3m 44s
chunks (2, Unit Test(2))	3m 44s
chunks (2, Unit Test(2))	3m 44s
chunks (3, Unit Test(3))	5m 29s
chunks (3, Unit Test(3))	5m 29s
chunks (3, Unit Test(3))	5m 29s
chunks (4, Tests(1))	5m 44s
chunks (4, Tests(1))	5m 32s
chunks (4, Tests(1))	5m 40s
chunks (5, Tests(2))	4m 59s
chunks (5, Tests(2))	4m 59s
chunks (5, Tests(2))	4m 59s
chunks (6, Tools Test)	5m 34s
chunks (6, Tools Test)	5m 35s
chunks (6, Tools Test)	5m 22s
chunks (7, Client Integration Test)	4m 51s
chunks (7, Client Integration Test)	4m 51s
chunks (7, Client Integration Test)	4m 51s
chunks (8, TSO Integration Test)	4m 45s
chunks (8, TSO Integration Test)	4m 45s
chunks (8, TSO Integration Test)	4m 45s
chunks (9, MicroService Integration(!TSO))	4m 25s
chunks (9, MicroService Integration(!TSO))	4m 25s
chunks (9, MicroService Integration(!TSO))	4m 25s
chunks (10, MicroService Integration(TSO))	5m 28s
chunks (10, MicroService Integration(TSO))	5m 16s
chunks (10, MicroService Integration(TSO))	5m 5s
report-coverage	0s
report-coverage	0s
report-coverage	9s
	2h 29m 34s

Provide feedback