Support for running azhpc-diagnostics in kubernetes (and AKS)

As a user of N-series VMs and H-series VMs in AKS, I want the ability to run the `azhpc-diagnostics` tool in a kubernetes environment, so that I can help the Azure support team gather the diagnostic data they need to root cause and mitigate platform issues encountered on these VMs.

Azure users are sometimes asked by Azure support to run the `azhpc-diagnostics` tool to gather data for them when an error condition arises that could be due to the platform. However, it's not clear how to run this tool within a kubernetes environment. This issue is a request to support running this tool in kubernetes (and thereby AKS).

No files or tests are identified in the issue. Start by reviewing the shell-based azhpc-diagnostics entry points and how the tool currently runs on Azure VMs, then define the Kubernetes and AKS execution path. Done means the tool can gather the requested diagnostic data from N-series and H-series VMs in that environment.

Written by the indexing model from the issue text.