sut_orchestrator: hyperv: don't automatically add disks

The create_vm() method of the HyperV tool, automatically finds offline
disks and adds them to the VM. This behavior is not required for hyperv
platform. So, introduce a parameter to control it and modify hyperv
platform to disable that behavior.

Signed-off-by: Anirudh Rayabharam <anrayabh@microsoft.com>

lisa/sut_orchestrator/hyperv/platform_.py

@@ -296,6 +296,7 @@ class HypervPlatform(Platform):
                     1: com1_pipe_path,
                 },
                 extra_args=extra_args,
+                attach_offline_disks=False,
             )
             # perform device passthrough for the VM
             self.device_pool._set_device_passthrough_node_context(

lisa/tools/hyperv.py

@@ -72,6 +72,7 @@ class HyperV(Tool):
         generation: int = 1,
         cores: int = 2,
         memory: int = 2048,
+        attach_offline_disks: bool = True,
         com_ports: Optional[Dict[int, str]] = None,
         secure_boot: bool = True,
         stop_existing_vm: bool = True,
@@ -119,7 +120,8 @@ class HyperV(Tool):
                 force_run=True,
             )
 
-        # add disks
+        # add disks if requested
+        if attach_offline_disks:
             disk_info = powershell.run_cmdlet(
                 "(Get-Disk | Where-Object {$_.OperationalStatus -eq 'offline'}).Number",
                 force_run=True,