v1.0 Various Functions Support #434
Description
New-RsRestSession supports v1.0. Other cmdlets like Get-RsRestDatasource don't support v1.0 due to ValidateSet. Fix up all the functions to support v1.0. Maybe one could Write-Warning if it is used to alert folks that it isn't supported.
Example
$rsr = New-RsRestSession -ReportPortalUri https://myssrs.domain.org/Reports -RestApiVersion v1.0
Get-RsRestDataSource -RsItem '/Datasource/MyDatasource' -WebSession $rsr