fix(agw): Modified code to fix the issue 14244

[rsarwad]

Summary

Closes #14244

Modified code to read enb_name in character array format as expected by API, set_guage(). Since enb_name, read from proto files was in string format was resulting into serialization and de-serialization errors.
The PR provides fixes for the issue, #14244

Test Plan

Executed s1ap sanity test suite and unit test cases

[github-actions]

Thanks for opening a PR! 💯

A couple initial guidelines

• All commits must be signed off. This is enforced by PR DCO check.
• All PR titles must follow the semantic commits format. This is enforced by Semantic PR.

Howto

• Reviews. The "Reviewers" listed for this PR are the Magma maintainers who will shepherd it.
• Checks. All required CI checks must pass before merge.
• Merge. Once approved and passing CI checks, use the ready2merge label to indicate the maintainers can merge your PR.

More info

Please take a moment to read through the Magma project's

• Contributing Conventions for norms around contributed code

If this is your first Magma PR, also consider reading

• Developer Onboarding for onboarding as a new Magma developer
• Development Workflow for guidance on your first pull request
• CI Checks for points of contact for failing or flaky CI checks
• GitHub-to-Slack mappings for Magma maintainers for guidance on how to contact maintainers on Slack

[crasu]

Code change looks good. Could you run the lte integ tests with this change from your repo to prove the error message is gone.

[rsarwad]

Code change looks good. Could you run the lte integ tests with this change from your repo to prove the error message is gone.

Yes @crasu Locally verified that the protobuf error messages are not seen. But while I was self reviewing I got to know that similar changes are needed at some other places. Modified the code and again kept for executing "lte integ_tests". Let you know once that is completed

[rsarwad]

Code change looks good. Could you run the lte integ tests with this change from your repo to prove the error message is gone.

Yes @crasu Locally verified that the protobuf error messages are not seen. But while I was self reviewing I got to know that similar changes are needed at some other places. Modified the code and again kept for executing "lte integ_tests". Let you know once that is completed

@crasu, "lte integ_tests" completed successfully in local setup

[ssanadhya]

Lgtm