Update FileSystemProviderTest to let all test method works for #120
Update FileSystemProviderTest to let all test method works for #120

kmosher/PowerShell,daxian-dbw/PowerShell,kmosher/PowerShell,KarolKaczmarek/PowerShell,jsoref/PowerShell,bingbing8/PowerShell,bingbing8/PowerShell,jsoref/PowerShell,bmanikm/PowerShell,JamesWTruher/PowerShell-1,TravisEz13/PowerShell,TravisEz13/PowerShell,jsoref/PowerShell,bingbing8/PowerShell,JamesWTruher/PowerShell-1,bingbing8/PowerShell,KarolKaczmarek/PowerShell,PaulHigin/PowerShell,PaulHigin/PowerShell,JamesWTruher/PowerShell-1,TravisEz13/PowerShell,KarolKaczmarek/PowerShell,JamesWTruher/PowerShell-1,bmanikm/PowerShell,daxian-dbw/PowerShell,jsoref/PowerShell,bmanikm/PowerShell,jsoref/PowerShell,daxian-dbw/PowerShell,KarolKaczmarek/PowerShell,bingbing8/PowerShell,kmosher/PowerShell,kmosher/PowerShell,bmanikm/PowerShell,PaulHigin/PowerShell,PaulHigin/PowerShell,TravisEz13/PowerShell,kmosher/PowerShell,daxian-dbw/PowerShell,bmanikm/PowerShell,KarolKaczmarek/PowerShell