Proxmox: fix restore snapshot with memory

[weizhouapache]

Description

This PR fixes an issue when restore snapshot in external provider Proxmox

Steps to reproduce the issue

• add cluster and host for proxmox (refer to https://docs.cloudstack.apache.org/en/latest/adminguide/extensions/builtin_extensions.html#proxmox)
• deploy vm in proxmox
• create snapshot-001 with memory
• create snapshot-002 without memory
• restore snapshot-002, worked as expected
• restore snapshot-001, got an exception

Reason:

• snapshot-002 does not have memory, the vm is stopped when restore snapshot-002, starting worked
• snapshot-001 has memory, the vm is still running when restore snapshot-001, starting failed. No need to start

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?

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 17.36%. Comparing base (9fd2b90) to head (4ddb124).
⚠️ Report is 4 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##               main   #11450   +/-   ##
=========================================
  Coverage     17.36%   17.36%           
+ Complexity    15236    15235    -1     
=========================================
  Files          5886     5886           
  Lines        525645   525645           
  Branches      64156    64156           
=========================================
  Hits          91257    91257           
  Misses       424093   424093           
  Partials      10295    10295           

Flag	Coverage Δ
uitests	3.63% <ø> (ø)
unittests	18.40% <ø> (ø)

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[sureshanaparti]

@blueorangutan package

[blueorangutan]

@sureshanaparti 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 ✔️ debian ✔️ suse15. SL-JID 14627

[vladimirpetrov]

LGTM based on manual testing!