[Linux] Fix test issue for Flatcar 3760.2.0

[keirazhang]

From Flatcar 3760.2.0, /etc/vmware-tools is not writable any more. So we can't enable VMware Tools debug logs in /etc/vmware-tools/tools.conf, and can't create quiesce snapshot scripts under /etc/vmware-tools/backupScripts.d. Besides, Flatcar 3760.2.0 added vgauth. Therefore, I made below changes for Flatcar:

1. Do not enable VMware Tools debug logging for Flatcar 3760.2.0 or later, and only collect default VMware Tools logs from /var/log.
2. Skip check_quiesce_snapshot_custom_script testing from Flatcar 3760.2.0.
3. Check VGAuth service status from Flatcar 3760.2.0.

In Flatcar 3760.2.0, vmtoolsd and vgauthd services are running but disabled. That need to double check with Flatcar whether it is a 3rd party issue.

VM information:
+------------------------------------------------------------------------------------------------------+
| Name                      | test_vm                                                                  |
+------------------------------------------------------------------------------------------------------+
| Guest OS Distribution     | Flatcar 3760.2.0 x86_64                                                  |
+------------------------------------------------------------------------------------------------------+
| GUI Installed             | False                                                                    |
+------------------------------------------------------------------------------------------------------+
| CloudInit Version         |                                                                          |
+------------------------------------------------------------------------------------------------------+
| Hardware Version          | vmx-17                                                                   |
+------------------------------------------------------------------------------------------------------+
| VMTools Version           | 12.3.0 (build-22234872)                                                  |
+------------------------------------------------------------------------------------------------------+
| Config Guest Id           | other3xLinux64Guest                                                      |
+------------------------------------------------------------------------------------------------------+
| GuestInfo Guest Id        | other3xLinux64Guest                                                      |
+------------------------------------------------------------------------------------------------------+
| GuestInfo Guest Full Name | Other 3.x Linux (64-bit)                                                 |
+------------------------------------------------------------------------------------------------------+
| GuestInfo Guest Family    | linuxGuest                                                               |
+------------------------------------------------------------------------------------------------------+
| GuestInfo Detailed Data   | architecture='X86'                                                       |
|                           | bitness='64'                                                             |
|                           | buildNumber='2024-01-16-1847'                                            |
|                           | cpeString='cpe:2.3:o:flatcar-linux:flatcar_linux:3760.2.0:*:*:*:*:*:*:*' |
|                           | distroAddlVersion='3760.2.0'                                             |
|                           | distroName='Flatcar Container Linux by Kinvolk'                          |
|                           | distroVersion='3760.2.0'                                                 |
|                           | familyName='Linux'                                                       |
|                           | kernelVersion='6.1.73-flatcar'                                           |
|                           | prettyName='Flatcar Container Linux by Kinvolk 3760.2.0 (Oklo)'          |
+------------------------------------------------------------------------------------------------------+


Test Results (Total: 3, Passed: 1, Failed: 1, Skipped: 1, Elapsed Time: 00:02:52)
+-------------------------------------------------------------------------+
| ID | Name                                 |   Status        | Exec Time |
+-------------------------------------------------------------------------+
|  1 | vgauth_check_service                 | * Failed        | 00:00:49  |
|  2 | check_os_fullname                    |   Passed        | 00:00:41  |
|  3 | check_quiesce_snapshot_custom_script | * Not Supported | 00:00:34  |
+-------------------------------------------------------------------------+

[Tomorrow9]

LGTM, thanks!