Added vddk support in vmware to kvm migrations

[harikrishna-patnala]

Description

This PR introduces the VDDK implementation as part of VMware to KVM migration which reduces the migration time by half when compared to the existing implementation with exportOVF

Solution: Introduce VDDK configuration at both the host agent level and per-API-call level, wired through the migration execution pipeline on the KVM host.

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Key Capabilities

Capability	Detail
Host-level config	Four new agent.properties keys configure VDDK defaults per KVM host
API-level overrides	Callers can pass VDDK settings via importVm details, overriding host defaults
Secure password handling	vCenter password written to a temp file, passed via -ip or --password-file based on virt-v2v version, and deleted immediately after use
Auto-thumbprint fetch	If no thumbprint is configured, it is automatically retrieved from vCenter via openssl s_client

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Configuration Keys

libguestfs.backend   # LIBGUESTFS backend (default: direct)
vddk.lib.dir         # Path to VDDK library directory
vddk.transports      # Transport preference, e.g. nbd:nbdssl
vddk.thumbprint      # vCenter SHA1 thumbprint (auto-fetched if unset)

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Precedence

API details  >  agent.properties

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Types of changes

• Breaking change (fix or feature that would cause existing functionality to change)
• New feature (non-breaking change which adds functionality)
• Bug fix (non-breaking change which fixes an issue)
• Enhancement (improves an existing feature and functionality)
• Cleanup (Code refactoring and cleanup, that may add test cases)
• Build/CI
• Test (unit or integration test code)

Feature/Enhancement Scale or Bug Severity

Feature/Enhancement Scale

• Major
• Minor

Bug Severity

• BLOCKER
• Critical
• Major
• Minor
• Trivial

Screenshots (if appropriate):

How Has This Been Tested?

How did you try to break this feature and the system with this change?

[harikrishna-patnala]

@blueorangutan package

[blueorangutan]

@harikrishna-patnala a [SL] Jenkins job has been kicked to build packages. It will be bundled with KVM, XenServer and VMware SystemVM templates. I'll keep you posted as I make progress.

[codecov]

Codecov Report

❌ Patch coverage is 44.27245% with 180 lines in your changes missing coverage. Please review.
✅ Project coverage is 17.62%. Comparing base (4708121) to head (7fb0b85).

Files with missing lines	Patch %	Lines
.../wrapper/LibvirtConvertInstanceCommandWrapper.java	46.82%	82 Missing and 10 partials ⚠️
...ervisor/kvm/resource/LibvirtComputingResource.java	9.80%	46 Missing ⚠️
...va/com/cloud/agent/api/ConvertInstanceCommand.java	50.00%	15 Missing ⚠️
.../apache/cloudstack/vm/UnmanagedVMsManagerImpl.java	69.76%	5 Missing and 8 partials ⚠️
.../java/com/cloud/agent/api/to/RemoteInstanceTO.java	53.84%	6 Missing ⚠️
...java/com/cloud/agent/manager/AgentManagerImpl.java	0.00%	5 Missing ⚠️
...e/cloudstack/api/command/admin/vm/ImportVmCmd.java	0.00%	3 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               4.22   #12970      +/-   ##
============================================
+ Coverage     17.60%   17.62%   +0.01%     
- Complexity    15677    15698      +21     
============================================
  Files          5918     5918              
  Lines        531681   531982     +301     
  Branches      65005    65040      +35     
============================================
+ Hits          93623    93776     +153     
- Misses       427498   427631     +133     
- Partials      10560    10575      +15     

Flag	Coverage Δ
uitests	3.70% <ø> (-0.01%)	⬇️
unittests	18.70% <44.27%> (+0.02%)	⬆️

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[harikrishna-patnala]

@blueorangutan package

[blueorangutan]

@harikrishna-patnala a [SL] Jenkins job has been kicked to build packages. It will be bundled with KVM, XenServer and VMware SystemVM templates. I'll keep you posted as I make progress.

[harikrishna-patnala]

@blueorangutan package

[blueorangutan]

@harikrishna-patnala a [SL] Jenkins job has been kicked to build packages. It will be bundled with KVM, XenServer and VMware SystemVM templates. I'll keep you posted as I make progress.

[blueorangutan]

Packaging result [SF]: ✔️ el8 ✔️ el9 ✔️ el10 ✔️ debian ✔️ suse15. SL-JID 17380

[harikrishna-patnala]

@blueorangutan package