[sdn_tests]: Adding GNMI testhelper to pins_ondatra.

[VSuryaprasad-HCL]

Description of PR

• [sdn_tests]: Adding GNMI testhelper to pins_ondatra.

Summary:

• Adding GNMI testhelper to pins_ondatra.

Build Results:

        $ bazel build ...

        INFO: From Generating Descriptor Set proto_library @com_github_openconfig_gnsi//acctz:acctz_proto:
        github.com/openconfig/gnsi/acctz/acctz.proto:36:1:
        warning: Import github.com/openconfig/gnsi/version/version.proto is unused.
        INFO: Elapsed time: 541.828s, Critical Path: 160.92s
        INFO: 975 processes: 251 internal, 724 linux-sandbox.
        INFO: Build completed successfully, 975 total actions

Type of change

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

Back port request

• 201911
• 202012
• 202205
• 202305
• 202311

Approach

What is the motivation for this PR?

How did you do it?

How did you verify/test it?

Any platform specific information?

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

Documentation

• HLD - SDN Test framework for SONiC - SDN Test framework for SONiC #11771

[parth-opensrc]

Please change commit message to Adding gnmi testhelper to pins_ondatra.
Also, what command are you using to Build?

[VSuryaprasad-HCL]

Please change commit message to Adding gnmi testhelper to pins_ondatra. Also, what command are you using to Build?
I've made the changes as per your instructions.
I am currently using 'Bazel build ...' command to Build 'pins_ondatra'.

[VSuryaprasad-HCL]

#11771