3 issues with Configure-AVD-Host.ps1

[paullizer]

1. Write-Log function isn't defined on this script. It throws an error early on, but I was able to copy and paste this function from Connect-LinuxBroker.ps1
2. After az cli is installed, it tries to execute az cli immediately after without refreshing PATH, and it says "az" command is not recognized. i guess either PATH env variable can be refreshed right after, or you can just re-run the script
3. After Connect-LinuxBroker.ps1 is downloaded, the configure script replaces $apiBaseUrl successfully, but it does not replace $apiAppIdUri. This results in following line in Connect-LinuxBroker.ps1 after the configure script runs:
4. $apiAppIdUri = "api://your_linuxbroker_api_client_id"
5. I just hard coded it into the script.