Multipath Bugfix Changes

[harshitap26]

Description

The PR includes changes on the gonvme functions (ListNamespaceDevices and GetNamespaceData) to include the namespace in the output, which is required for the bugfix on Gobrick side.

GitHub Issues

List the GitHub issues impacted by this PR:

GitHub Issue #
dell/csm#158

Checklist:

• I have performed a self-review of my own code to ensure there are no formatting, vetting, linting, or security issues
• I have verified that new and existing unit tests pass locally with my changes
• I have not allowed coverage numbers to degenerate
• I have maintained at least 90% code coverage
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
• Backward compatibility is not broken

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Please also list any relevant details for your test configuration

• Tested on Linux environment with nvme library installed
• Changes on ListNamespaceDevices and GetNamespaceData are successful

Changes Done - Included the namespace in the output of both the function - ListNamespaceDevices and GetNamespaceData

ListNamespaceDevices Output - 
{devicePath namespace} [namespaceId1 namespaceId2]
{/dev/nvme0n1 54} [0x36 0x37]
{/dev/nvme0n2 55} [0x36 0x37]
{/dev/nvme1n1 54} [0x36 0x37]
{/dev/nvme1n2 55} [0x36 0x37]

Changes Made will be reflected for the bug caused in creating an NVMe pod with multiple volumes on the Gobrick side.