Add test for TransportServer load balancing config

[soneillf5]

Proposed changes

Adds a basic check for the config change relating to the number of replicas updating the stream/tcp load balancing config on the nginx instance.

Checklist

Before creating a PR, run through this checklist and mark each as complete.

• I have read the CONTRIBUTING doc
• I have added tests that prove my fix is effective or that my feature works
• I have checked that all unit tests pass after adding my changes
• I have updated necessary documentation
• I have rebased my branch onto master
• I will ensure my PR is targeting the master branch and pulling from my branch from my own fork

[pleshakov]

worked well in kind!

suite/test_transport_server_tcp_load_balance.py::TestTransportServerTcpLoadBalance::test_number_of_replicas[crd_ingress_controller0-transport_server_setup0] PASSED [ 50%]
suite/test_transport_server_tcp_load_balance.py::TestTransportServerTcpLoadBalance::test_tcp_request_load_balanced[crd_ingress_controller0-transport_server_setup0] PASSED [100%]

IC logs:

10.244.0.1 [23/Apr/2021:16:26:14 +0000] TCP 200 16 0 0.003 "-"
10.244.0.1 [23/Apr/2021:16:26:14 +0000] TCP 200 16 0 0.004 "-"
10.244.0.1 [23/Apr/2021:16:26:14 +0000] TCP 200 16 0 0.044 "-"
10.244.0.1 [23/Apr/2021:16:26:14 +0000] TCP 200 16 0 0.022 "-"
10.244.0.1 [23/Apr/2021:16:26:14 +0000] TCP 200 16 0 0.020 "-"
10.244.0.1 [23/Apr/2021:16:26:14 +0000] TCP 200 16 0 0.001 "-"
10.244.0.1 [23/Apr/2021:16:26:14 +0000] TCP 200 16 0 0.022 "-"
10.244.0.1 [23/Apr/2021:16:26:14 +0000] TCP 200 16 0 0.032 "-"
10.244.0.1 [23/Apr/2021:16:26:14 +0000] TCP 200 16 0 0.013 "-"
10.244.0.1 [23/Apr/2021:16:26:14 +0000] TCP 200 16 0 0.004 "-"
10.244.0.1 [23/Apr/2021:16:26:14 +0000] TCP 200 16 0 0.007 "-"
10.244.0.1 [23/Apr/2021:16:26:14 +0000] TCP 200 16 0 0.002 "-"
10.244.0.1 [23/Apr/2021:16:26:14 +0000] TCP 200 16 0 0.002 "-"
10.244.0.1 [23/Apr/2021:16:26:14 +0000] TCP 200 16 0 0.001 "-"
10.244.0.1 [23/Apr/2021:16:26:14 +0000] TCP 200 16 0 0.004 "-"
10.244.0.1 [23/Apr/2021:16:26:14 +0000] TCP 200 16 0 0.008 "-"
10.244.0.1 [23/Apr/2021:16:26:14 +0000] TCP 200 16 0 0.002 "-"
10.244.0.1 [23/Apr/2021:16:26:14 +0000] TCP 200 16 0 0.004 "-"
10.244.0.1 [23/Apr/2021:16:26:14 +0000] TCP 200 16 0 0.003 "-"
10.244.0.1 [23/Apr/2021:16:26:14 +0000] TCP 200 16 0 0.011 "-"