xComputer JoinDomain fails when server is already in domain

[nilsvbconxion]

Resource fails with fatal error if the computer already is in the domain.
The test should pick this up, which now it doesn't and hence throws a fatal exception when attempting to join the domain again.

Error:
Cannot add computer 'x' to domain 'y' because it is already in that domain.
+ CategoryInfo : InvalidOperation: (x:) [], CimException
+ FullyQualifiedErrorId : AddComputerToSameDomain,Microsoft.PowerShell.Commands.AddComputerCommand
+ PSComputerName : localhost

[ExhaleSthlm]

You are probably using NetBios domain name when joining but xComputer uses fully qualified domain name internally that unfortunately triggs a new join that will fail.

[PlagueHO]

Hi @nilsvbsol - @Identitry is quite correct I think. There is a PR going through at the moment that will resolve this:
#76