Adding test case to test telemetry service "osversion/build" query.

[macikgozwa]

Description of PR

Summary:
Adding a new test case to validate the osversion/build telemetry query. This is a new query to get the Sonic build version from the telemetry service. Details of the changes on telemetry service can be found in this PR: sonic-net/sonic-telemetry#50

Type of change

• Bug fix
• Testbed and Framework(new/improvement)
• Test case(new/improvement)

Approach

What is the motivation for this PR?

A test case needed to cover a recently added telemetry service feature.

How did you do it?

The test case runs the mentioned query and checks the existence of expected keywords in the response.

How did you verify/test it?

Using Sonic KVM testbed.

Any platform specific information?

NA

Supported testbed topology if it's a new test case?

NA

Documentation

[wangxin]

This test failed on vsimage, can you look into it? @macikgozwa

E           RunAnsibleModuleFail: run module shell failed, Ansible Results =>
E           {
E               "changed": true, 
E               "cmd": "python /gnxi/gnmi_cli_py/py_gnmicli.py -g -t 10.250.0.101 -p 50051 -m get -x osversion/build -xt OTHERS -o ndastreamingservertest", 
E               "delta": "0:00:00.798491", 
E               "end": "2020-11-24 08:16:23.024966", 
E               "failed": true, 
E               "invocation": {
E                   "module_args": {
E                       "_raw_params": "python /gnxi/gnmi_cli_py/py_gnmicli.py -g -t 10.250.0.101 -p 50051 -m get -x osversion/build -xt OTHERS -o ndastreamingservertest", 
E                       "_uses_shell": true, 
E                       "argv": null, 
E                       "chdir": null, 
E                       "creates": null, 
E                       "executable": null, 
E                       "removes": null, 
E                       "stdin": null, 
E                       "stdin_add_newline": true, 
E                       "strip_empty_ends": true, 
E                       "warn": true
E                   }
E               }, 
E               "msg": "non-zero return code", 
E               "rc": 1, 
E               "start": "2020-11-24 08:16:22.226475", 
E               "stderr": "Traceback (most recent call last):\n  File \"/gnxi/gnmi_cli_py/py_gnmicli.py\", line 422, in <module>\n    main()\n  File \"/gnxi/gnmi_cli_py/py_gnmicli.py\", line 389, in main\n    response = _get(stub, paths, user, password, prefix)\n  File \"/gnxi/gnmi_cli_py/py_gnmicli.py\", line 282, in _get\n    **kwargs)\n  File \"/usr/local/lib/python2.7/dist-packages/grpc/_channel.py\", line 550, in __call__\n    return _end_unary_response_blocking(state, call, False, None)\n  File \"/usr/local/lib/python2.7/dist-packages/grpc/_channel.py\", line 467, in _end_unary_response_blocking\n    raise _Rendezvous(state, None, None, deadline)\ngrpc._channel._Rendezvous: <_Rendezvous of RPC that terminated with:\n\tstatus = StatusCode.NOT_FOUND\n\tdetails = \"[OTHERS osversion build] not found in clientTrie tree\"\n\tdebug_error_string = \"{\"created\":\"@1606205783.009939832\",\"description\":\"Error received from peer\",\"file\":\"src/core/lib/surface/call.cc\",\"file_line\":1036,\"grpc_message\":\"[OTHERS osversion build] not found in clientTrie tree\",\"grpc_status\":5}\"\n>", 
E               "stderr_lines": [
E                   "Traceback (most recent call last):", 
E                   "  File \"/gnxi/gnmi_cli_py/py_gnmicli.py\", line 422, in <module>", 
E                   "    main()", 
E                   "  File \"/gnxi/gnmi_cli_py/py_gnmicli.py\", line 389, in main", 
E                   "    response = _get(stub, paths, user, password, prefix)", 
E                   "  File \"/gnxi/gnmi_cli_py/py_gnmicli.py\", line 282, in _get", 
E                   "    **kwargs)", 
E                   "  File \"/usr/local/lib/python2.7/dist-packages/grpc/_channel.py\", line 550, in __call__", 
E                   "    return _end_unary_response_blocking(state, call, False, None)", 
E                   "  File \"/usr/local/lib/python2.7/dist-packages/grpc/_channel.py\", line 467, in _end_unary_response_blocking", 
E                   "    raise _Rendezvous(state, None, None, deadline)", 
E                   "grpc._channel._Rendezvous: <_Rendezvous of RPC that terminated with:", 
E                   "\tstatus = StatusCode.NOT_FOUND", 
E                   "\tdetails = \"[OTHERS osversion build] not found in clientTrie tree\"", 
E                   "\tdebug_error_string = \"{\"created\":\"@1606205783.009939832\",\"description\":\"Error received from peer\",\"file\":\"src/core/lib/surface/call.cc\",\"file_line\":1036,\"grpc_message\":\"[OTHERS osversion build] not found in clientTrie tree\",\"grpc_status\":5}\"", 
E                   ">"
E               ], 
E               "stdout": "Performing GetRequest, encoding=JSON_IETF to 10.250.0.101  with the following gNMI Path\n ------------------------- \n elem {\n  name: \"osversion\"\n}\nelem {\n  name: \"build\"\n}", 
E               "stdout_lines": [
E                   "Performing GetRequest, encoding=JSON_IETF to 10.250.0.101  with the following gNMI Path", 
E                   " ------------------------- ", 
E                   " elem {", 
E                   "  name: \"osversion\"", 
E                   "}", 
E                   "elem {", 
E                   "  name: \"build\"", 
E                   "}"
E               ]
E           }

[macikgozwa]

Thanks for the review @wangxin. The test is failing because the corresponding service changes are not merged yet. The PR for the service changes is here.
I'll update this thread once that PR is merged and re-validate if the test is OK.

[macikgozwa]

Retest this, please