Dettach disk or nic is disabled in regular users

[dcarracedo]

Description
A regular user cannot dettach disk or nic from a vm. They should be able to dettach any disk or nic from a vm:

To Reproduce

1. Instantiate a vm as a regular user
2. Attach a disk
3. User cannot dettach the disk

Expected behavior

That an user can attach and dettach a disk or nic without restrictions, no matter if a restricted attribute exists.

Details

• Affected Component: Sunstone
• Hypervisor: N/A
• Version: 6.10.0

** Additional context **

The previous behavior it's only for vm instances. For vm templates, we need to improve the checking with the following rules:

Iif the following restricted attributes exists in oned.conf:

VM_RESTRICTED_ATTR = "DISK/TOTAL_BYTES_SEC"

And the vm template has a value for this attribute (e.g. TOTAL_BYTES_SEC=20") the dettach option should be disabled. But if the vm template has not any value for this attribute (e.g. the attribute doesn't exist in the template) the dettach option should be enabled.

Same behavior in NIC, PCI and schedule actions.

Progress Status

• Code committed
• Testing - QA
• Documentation (Release notes - resolved issues, compatibility, known issues)