Add Pester Unit test for Set-Alias
Add Pester Unit test for Set-Alias

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