Enhance importer to handle several issue

[votdev]

Problem:

• Import OpenStack server by UUID results in ugly VM name in Harvester
• Import OpenStack server with upper case characters in its name is not possible

Solution:
The following improvements have been done:

• Sanitize the configured VirtualMachineName field, e.g. convert upper case to lower case to make it RFC 1123 compliant.
• Convert UUID to real name for OpenStack imports
• Reduce waiting time to recheck if created VM is running from 5min to 2min
• Rename variable uuid to serverUUID in the OpenStack client code to do not collide with the imported uuid module
• Improve log messages
• Fix typos
• Add comments

Related Issue:
harvester/harvester#6500
harvester/harvester#6505
harvester/harvester#6673

Test plan:

Preparations

1. Create Secret, OpenstackSource and VmwareSource resources to access our test servers.
2. Create a Virtual Machines Network named vlan1 in the default namespace in Harvester.

Test case 1:

• Create the following VirtualMachineImport and import it.

apiVersion: migration.harvesterhci.io/v1beta1
kind: VirtualMachineImport
metadata:
  name: cirros-tiny
  namespace: default
spec:
  virtualMachineName: "cirros-tiny"
  networkMapping:
  - sourceNetwork: "shared"
    destinationNetwork: "default/vlan1"
  sourceCluster:
    name: devstack
    namespace: default
    kind: OpenstackSource
    apiVersion: migration.harvesterhci.io/v1beta1

• A VM named cirros-tiny should be created in Harvester.
• You should see the following output in the vm-import-controller log:

time="2024-09-10T12:25:53Z" level=info msg="The sanitization of the 'VirtualMachineImport' object was successful" name=cirros-tiny namespace=default spec.virtualMachineName=cirros-tiny status.definiteVirtualMachineName=cirros-tiny
time="2024-09-10T12:25:53Z" level=info msg="Power off the source VM" name=cirros-tiny namespace=default spec.sourceCluster.kind=OpenstackSource spec.sourceCluster.name=devstack spec.virtualMachineName=cirros-tiny status.definiteVirtualMachineName=cirros-tiny
time="2024-09-10T12:25:58Z" level=info msg="Exporting source VM" name=cirros-tiny namespace=default spec.sourceCluster.kind=OpenstackSource spec.sourceCluster.name=devstack spec.virtualMachineName=cirros-tiny status.definiteVirtualMachineName=cirros-tiny
time="2024-09-10T12:26:03Z" level=info msg="&{6c6cfbdc-xxxx-xxxx-xxxx-1d4d060420fa creating 1 nova 2024-09-10 12:26:03.198052 +0000 UTC 0001-01-01 00:00:00 +0000 UTC ]   lvmdriver-1 2d7f59c9-xxxx-xxxx-xxxx-71116eb42fd1  map] ace422xxxx088af true false   false}"
time="2024-09-10T12:26:07Z" level=info msg="Create a new image from a volume" attachedVolumeID=cee6186b-xxxx-xxxx-xxxx-86ac3b2dc16b name=cirros-tiny namespace=default spec.sourceCluster.kind=OpenstackSource spec.sourceCluster.name=devstack spec.virtualMachineName=cirros-tiny
time="2024-09-10T12:26:19Z" level=info msg="Download the image" imageID=9e092383-xxxx-xxxx-xxxx-749b38bbf023 name=cirros-tiny namespace=default spec.sourceCluster.kind=OpenstackSource spec.sourceCluster.name=devstack spec.virtualMachineName=cirros-tiny
time="2024-09-10T12:29:38Z" level=info msg="vm cirros-tiny in namespace default imported successfully"

Test case 2:

• Create the following VirtualMachineImport and import it.

apiVersion: migration.harvesterhci.io/v1beta1
kind: VirtualMachineImport
metadata:
  name: cirros-tiny-uuid
  namespace: default
spec:
  virtualMachineName: "dd952f47-6930-4d65-a702-0f7121b31c8f"
  networkMapping:
  - sourceNetwork: "shared"
    destinationNetwork: "default/vlan1"
  sourceCluster:
    name: devstack
    namespace: default
    kind: OpenstackSource
    apiVersion: migration.harvesterhci.io/v1beta1

• A VM named cirros-tiny should be created in Harvester.

Test case 3:

• Create the following VirtualMachineImport and import it.

apiVersion: migration.harvesterhci.io/v1beta1
kind: VirtualMachineImport
metadata:
  name: foo-bar
  namespace: default
spec:
  virtualMachineName: "foo-Bar"
  networkMapping:
  - sourceNetwork: "shared"
    destinationNetwork: "default/vlan1"
  sourceCluster:
    name: devstack
    namespace: default
    kind: OpenstackSource
    apiVersion: migration.harvesterhci.io/v1beta1

• A VM named foo-bar should be created in Harvester.

Test case 4:

• Create the following VirtualMachineImport and import it.

apiVersion: migration.harvesterhci.io/v1beta1
kind: VirtualMachineImport
metadata:
  name: mr-leap1
  namespace: default
spec: 
  virtualMachineName: "mr-leap1"
  networkMapping:
  - sourceNetwork: "VM Network"
    destinationNetwork: "default/vlan1"
  sourceCluster: 
    name: vcsim
    namespace: default
    kind: VmwareSource
    apiVersion: migration.harvesterhci.io/v1beta1

• A VM named mr-leap1 should be created in Harvester. Note, the export from the VMWare server might take a long time.
• You should see the following output in the vm-import-controller log:

time="2024-09-10T13:24:16Z" level=info msg="The sanitization of the 'VirtualMachineImport' object was successful" name=mr-leap1 namespace=default spec.virtualMachineName=mr-leap1 status.definiteVirtualMachineName=mr-leap1
time="2024-09-10T13:24:17Z" level=info msg="Power off the source VM" name=mr-leap1 namespace=default spec.sourceCluster.kind=VmwareSource spec.sourceCluster.name=vcsim spec.virtualMachineName=mr-leap1 status.definiteVirtualMachineName=mr-leap1
time="2024-09-10T13:24:24Z" level=info msg="Exporting source VM" name=mr-leap1 namespace=default spec.sourceCluster.kind=VmwareSource spec.sourceCluster.name=vcsim spec.virtualMachineName=mr-leap1 status.definiteVirtualMachineName=mr-leap1
time="2024-09-10T13:24:26Z" level=info msg="Downloading an image" deviceId="/vm-2375/ParaVirtualSCSIController0:0" name=mr-leap1 namespace=default path=mr-leap1-default-disk-0.vmdk size=48318382080 spec.sourceCluster.kind=VmwareSource spec.sourceCluster.name=vcsim spec.virtualMachineName=mr-leap1
time="2024-09-10T13:50:12Z" level=info msg="Skipping an image" deviceId="/vm-2375/VirtualIDEController0:0" name=mr-leap1 namespace=default path=disk-1.iso size=4631560192 spec.sourceCluster.kind=VmwareSource spec.sourceCluster.name=vcsim spec.virtualMachineName=mr-leap1
time="2024-09-10T13:50:12Z" level=info msg="Skipping an image" deviceId=/vm-2375/nvram name=mr-leap1 namespace=default path=disk-2.nvram size=8684 spec.sourceCluster.kind=VmwareSource spec.sourceCluster.name=vcsim spec.virtualMachineName=mr-leap1
time="2024-09-10T13:50:12Z" level=info msg="converting image /tmp/mr-leap1-default-981004653/mr-leap1-default-disk-0.vmdk to /tmp/vm-import-controller/mr-leap1-default-disk-0.img"
time="2024-09-10T14:08:39Z" level=info msg="vm mr-leap1 in namespace default imported successfully"