Correct guest info guest id in results.log and guest_info.json

[keirazhang]

With latest VMTools, the guest id in guest info for MIRACL LINUX 9.2 is empty string, but in our results.log it is not. By checking log plugin, it erased all empty values. So this fix is to correct that. All facts will take the last value as its final value, no matter it is empty or not.

+------------------------------------------------------------------------------------------------------------+
| Config Guest Id           | asianux8_64Guest                                                               |
+------------------------------------------------------------------------------------------------------------+
| GuestInfo Guest Id        |                                                                                |
+------------------------------------------------------------------------------------------------------------+
| GuestInfo Guest Full Name | Linux 5.14.0-284.11.1.el9_2.x86_64 MIRACLE LINUX 9.2 (Feige) 9.2 MIRACLE LINUX |
|                           | 9.2 (Feige) cpe:/o:cybertrust_japan:miracle_linux:9                            |
+------------------------------------------------------------------------------------------------------------+
| GuestInfo Guest Family    | linuxGuest                                                                     |
+------------------------------------------------------------------------------------------------------------+
| GuestInfo Detailed Data   | architecture='X86'                                                             |
|                           | bitness='64'                                                                   |
|                           | cpeString='cpe:/o:cybertrust_japan:miracle_linux:9'                            |
|                           | distroAddlVersion='9.2 (Feige)'                                                |
|                           | distroName='MIRACLE LINUX'                                                     |
|                           | distroVersion='9.2'                                                            |
|                           | familyName='Linux'                                                             |
|                           | kernelVersion='5.14.0-284.11.1.el9_2.x86_64'                                   |
|                           | prettyName='MIRACLE LINUX 9.2 (Feige)'                                         |
+------------------------------------------------------------------------------------------------------------+

Test Results (Total: 1, Passed: 1, Elapsed Time: 00:06:40)
+--------------------------------------------------+
| ID | Name                   | Status | Exec Time |
+--------------------------------------------------+
|  1 | ovt_verify_pkg_install | Passed | 00:06:20  |
+--------------------------------------------------+

[Tomorrow9]

LGTM, thanks