<fix>[snapshot]: fix UndoSnapshotCreation error on sblk

[MatheMatrix]

1.deactive snapshot lv on other host before committing volume.
2.do not resize qcow2, only resize snapshot lv before committing volume.

Resolves/Related: ZSTAC-77942

Change-Id: I767861677267636b677578636267746c62777479

sync from gitlab !8486

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📥 Commits

Reviewing files that changed from the base of the PR and between f758a66 and 7bcc7c7.

📒 Files selected for processing (2)

• plugin/kvm/src/main/java/org/zstack/kvm/KVMAgentCommands.java (1 hunks)
• plugin/kvm/src/main/java/org/zstack/kvm/KVMHost.java (1 hunks)

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• Commit unit tests in branch sync/shan.wu/fix-ZSTAC-78505@@2

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