Disk usage metrics do not work in specific zone

##### ISSUE TYPE

* Other

##### COMPONENT NAME

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VMWARE
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##### CLOUDSTACK VERSION

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4.18
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##### CONFIGURATION

##### OS / ENVIRONMENT

##### SUMMARY
In my environment, I use 2 zones.

However, in the "x" zone, the metrics part presents a problem when displaying disk and network data.

While in zone "y" all data is shown normally.

Do you have any specific connectivity tests to do?

In principle, the zone settings are identical, the only difference is the following:

Zone X
System VM's -> KVM (The only KVM it has are the two SystemVM)
Zone X environment uses VMware vSphere Client version 6.7.0

Zone y uses the system VM and entire environment with vSphere Client version 7.0.3.01700

##### Remembering that the disk and network metrics just do not appear in the problem area, but the CPU and memory metrics work normally.

Zone X:

Zone Y:

The issue names no files, tests, or entry points. Start by reproducing the metrics view in the two zones and comparing the VMware vSphere 6.7.0 and 7.0.3.01700 environments, focusing on why disk and network data are absent while CPU and memory appear. Done means identifying and correcting the cause so all four metric types display in zone X.

Written by the indexing model from the issue text.