Managed Dependencies: Insufficiently specific error message when Save-Module is unable to access PS Gallery

[andystaples]

Per this issue: https://portal.microsofticm.com/imp/v3/incidents/details/413931391/home When customer configuration prevents Save-Module from accessing the PowerShell Gallery, the error message is generated: Failed to install module {module} version {version}. 1st attempt. Error: 'The running command stopped because the preference variable "ErrorActionPreference" or common parameter is set to Stop: Unable to find repository 'PSGallery'. Use Get-PSRepository to see all available repositories.'

This error message comes from the following line in PowerShellGet repo: https://github.com/PowerShell/PowerShellGetv2/blob/3b38eec8742d6b6f26cf0f010e0dd95691ed5ade/src/PowerShellGet/PSGet.Resource.psd1#L174 This is not helpful when diagnosing the cause of the error. Filing this issue for discussion on how we can improve this behavior.