Add name validation to clone volume

[Oferlis]

Added name field validation to prevent duplicate volume name, it is necessary in AutoSDE's side and I assume other providers might need it too.

• Providers PR: CloudVolume clone manageiq-providers-autosde#215
• UI PR: added name validation to name field #8670

[miq-bot]

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[miq-bot]

This issue has been automatically closed because it has not been updated for at least 3 months.

Feel free to reopen this issue if this issue is still valid.

Thank you for all your contributions! More information about the ManageIQ triage process can be found in the triage process documentation.