Fix empty hardware version in collected OVF config info and guest_info.json

[keirazhang]

The hardware version in collected OVF config info is empty without this fix, as below:

"ovf_vm_hardware_config": {
            "CPU Cores per Socket": 1,
            "CPU Hot Add Enabled": false,
            "CPU I/O MMU": false,
            "CPU Nested HV Enabled": false,
            "CPU Number": 2,
            "Firmware": "efi",
            "Guest OS ID": "rhel8_64Guest",
            "Guest OS Version": "Red Hat Enterprise Linux 8 (64-bit)",
            "Hardware Version": "",
            "Memory Hot Add Enabled": false,
            "Memory Size in MB": 4096,
            "Secure Boot": false,
            "VBS Enabled": false,
            "Virtual TPM": false
        }

With this fix:

"ovf_vm_hardware_config": {
            "CPU Cores per Socket": 1,
            "CPU Hot Add Enabled": false,
            "CPU I/O MMU": false,
            "CPU Nested HV Enabled": false,
            "CPU Number": 2,
            "Firmware": "efi",
            "Guest OS ID": "rhel8_64Guest",
            "Guest OS Version": "Red Hat Enterprise Linux 8 (64-bit)",
            "Hardware Version": "vmx-15",
            "Memory Hot Add Enabled": false,
            "Memory Size in MB": 4096,
            "Secure Boot": false,
            "VBS Enabled": false,
            "Virtual TPM": false

guest_info.json

[
    {
        "Guest_OS_Distribution": "",
        "ESXi_Version": "8.0.3",
        "ESXi_Build": "22375478",
        "Hardware_Version": "vmx-15",
        "VMTools_Version": "12.1.5 (build-20735119)",
        "Config_Guest_Id": "rhel8_64Guest",
        "GuestInfo_Guest_Id": "rhel8_64Guest",
        "GuestInfo_Guest_Full_Name": "Red Hat Enterprise Linux 8 (64-bit)",
        "GuestInfo_Guest_Family": "linuxGuest",
        "GuestInfo_Detailed_Data": ""
    }
]

[123lzxm]

LGTM, thanks.