VMFS kernel adapter validation

[srajmohan24]

The changes in this PR are as follows:

• Check whether vmk5 and vmk6 are provisioned prior to iSCSI configuration.
• Update Microsoft.AVS.Management dependency version to 7.0.198.

I have read the contributor guidelines and have completed the following:

• Formatted the code using VSCode default formatter for PowerShell.
• Tested the code end-to-end against an SDDC.
• Documented the functions using standard PowerShell markup and applied AVSAttribute to newly exported functions.