az help displayed the result with an error: psutil.AccessDenied

### **This is autogenerated. Please review and update as needed.**

## Describe the bug

**Command Name**
`az help`
`az -help`
`az --help`

**Errors:**
```
psutil.AccessDenied (pid=7580)
Traceback (most recent call last):
Temp\pip-unpacked-wheel-eja79zsp\psutil\_common.py, ln 449, in wrapper
AttributeError: _cache

...

Temp\pip-unpacked-wheel-eja79zsp\psutil\_pswindows.py, ln 750, in name
Temp\pip-unpacked-wheel-eja79zsp\psutil\_pswindows.py, ln 681, in wrapper
psutil.AccessDenied: psutil.AccessDenied (pid=7580)
```

## To Reproduce:
Steps to reproduce the behavior. Note that argument values have been redacted, as they may contain sensitive information.

- _Put any pre-requisite steps here..._
- `az --help`

## Expected Behavior

## Environment Summary
```
Windows-10-10.0.19041-SP0
Python 3.6.8
Installer:

azure-cli 2.20.0 *

```
## Additional Context