feat: add server and load balancer private_net_for helper method
#1100
| Job | Run time |
|---|---|
| 41s | |
| 29s | |
| 1m 10s |
private_net_for helper method
#1100
| Job | Run time |
|---|---|
| 41s | |
| 29s | |
| 1m 10s |