khepri_cluster: Add wait_for_leader/{0,1,2}
#1770
| Job | Run time |
|---|---|
| 4m 39s | |
| 4m 30s | |
| 3m 57s | |
| 4m 14s | |
| 4m 41s | |
| 22m 1s |
wait_for_leader/{0,1,2}
#1770
| Job | Run time |
|---|---|
| 4m 39s | |
| 4m 30s | |
| 3m 57s | |
| 4m 14s | |
| 4m 41s | |
| 22m 1s |