Install-AzSKOrganizationPolicy results in erroneous message about Only Alphanumeric characters are allowed.

[njohnso]

Error Received when running the command is:

InvalidArgument: Only alphanumeric characters are supported in StorageAccountName param. And length should be less than 24 characters

Found that using all numbers resulted in no issues. SO I looked intot he code to detemrine why this was the case. Found out that uppercase letters were what prevented function of the script.

DevOpsKit/src/AzSK/Framework/Core/PolicySetup/PolicySetup.ps1

Line 103 in ce5e1c5

$storageRegEx = [regex]"^[a-z0-9]{3,24}$"

On this line the RegEx being used only accounts for lowercase letters. Either the script should convert all inputs to lowercase or the regex should accept both uppercase and lowercase letters as such:

$storageRegEx = [regex]"^[A-Za-z0-9]{3,24}$"