Virtual Machine Suspend Function


##### ISSUE TYPE
* Enhancement Request
##### COMPONENT NAME
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VM
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##### CLOUDSTACK VERSION
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4.18
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##### CONFIGURATION
Does it support the suspend or pause function of virtual machines
##### OS / ENVIRONMENT

##### SUMMARY

##### STEPS TO REPRODUCE
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##### EXPECTED RESULTS
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Add virtual machine suspension in the virtual machine operation function, release corresponding CPU resources, save the state of the virtual machine in use, and wait for it to be awakened and used at any time
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##### ACTUAL RESULTS
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The issue identifies the CloudStack VM component but names no files, tests, or entry points. Start by locating the existing virtual-machine operation handlers and their provider-specific implementations; done would include suspend and wake operations that preserve VM state and release CPU resources.

Written by the indexing model from the issue text.