[BUG] Test failures: azurelinuxagent.common.utils.shellutil.CommandError: 'systemctl show walinuxagent.service --property CPUQuotaPerSecUSec' failed: 1 (System has not been booted with systemd as init sys...

**Describe the bug: A clear and concise description of what the bug is.**

```
> raise CommandError(command=__format_command(command), return_code=return_code, stdout=stdout, stderr=stderr)
E azurelinuxagent.common.utils.shellutil.CommandError: 'systemctl show walinuxagent.service --property CPUQuotaPerSecUSec' failed: 1 (System has not been booted with systemd as init system (PID 1). Can't operate.
E Failed to connect to bus: Host is down)

azurelinuxagent/common/utils/shellutil.py:204: CommandError
```

**Distro and WALinuxAgent details (please complete the following information):**
Debian 13, in a build environment