Windows: install.ps1 The variable '$AIRGAP_CHECKSUMS_URL' cannot be retrieved because it has not been set

[rgl]

The following code uses an unknown variable:

rke2/install.ps1

Line 583 in b25c1f4

$AIRGAP_CHECKSUM_EXPECTED = Get-AirgapChecksums -CommitHash $Commit -AirgapChecksumsUrl $AIRGAP_CHECKSUMS_URL -StorageUrl $STORAGE_URL -TempAirgapChecksums $TMP_AIRGAP_CHECKSUMS

I was able to catch this because my powershell is in strict-mode.

To catch these kind of problems, I would modify this script to have something alike:

Set-StrictMode -Version Latest
$ErrorActionPreference = 'Stop'
$ProgressPreference = 'SilentlyContinue'
trap {
    Write-Host "ERROR: $_"
    Write-Host (($_.ScriptStackTrace -split '\r?\n') -replace '^(.*)$','ERROR: $1')
    Write-Host (($_.Exception.ToString() -split '\r?\n') -replace '^(.*)$','ERROR EXCEPTION: $1')
    Exit 1
}

[brandond]

cc @phillipsj @rosskirkpat