add bosh-psmodules to stembuild

- did not include files related to 2012R2 and 1803

Source: https://github.com/cloudfoundry-attic/bosh-psmodules/

[#175550580](https://www.pivotaltracker.com/story/show/175550580)
 Where should bosh-psmodules live?

modules/BOSH.Account/BOSH.Account.Tests.ps1

@@ -0,0 +1,47 @@
+Remove-Module -Name BOSH.Account -ErrorAction Ignore
+Import-Module ./BOSH.Account.psm1
+
+Remove-Module -Name BOSH.Utils -ErrorAction Ignore
+Import-Module ../BOSH.Utils/BOSH.Utils.psm1
+
+Describe "Account" {
+
+    Context "when username is not provided" {
+        It "throws" {
+            { Add-Account } | Should Throw "Provide a user name"
+        }
+    }
+
+    Context "when password is not provided" {
+        It "throws" {
+            { Add-Account -User hello } | Should Throw "Provide a password"
+        }
+    }
+
+    Context "when the username and password are valid" {
+        $timestamp=(get-date -UFormat "%s" -Millisecond 0)
+        $user = "TestUser_$timestamp"
+        $password = "Password123!"
+
+         BeforeEach {
+            $userExists = !!(Get-LocalUser | Where {$_.Name -eq $user})
+            if($userExists) {
+                Remove-LocalUser -Name $user
+            }
+        }
+
+        It "Adds and removes a new user account" {
+            Add-Account -User $user -Password $password
+            mkdir "C:\Users\$user" -ErrorAction Ignore
+            $adsi = [ADSI]"WinNT://$env:COMPUTERNAME"
+            $existing = $adsi.Children | where {$_.SchemaClassName -eq 'user' -and $_.Name -eq $user }
+            $existing | Should Not Be $null
+            Remove-Account -User $user
+            $existing = $adsi.Children | where {$_.SchemaClassName -eq 'user' -and $_.Name -eq $user }
+            $existing | Should Be $null
+        }
+    }
+}
+
+Remove-Module -Name BOSH.Account -ErrorAction Ignore
+Remove-Module -Name BOSH.Utils -ErrorAction Ignore

modules/BOSH.Account/BOSH.Account.psd1

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+@{
+RootModule = 'BOSH.Account'
+ModuleVersion = '0.1'
+GUID = 'ebdf7a79-39df-46ce-a046-42dd10de82ce'
+Author = 'BOSH'
+Copyright = '(c) 2017 BOSH'
+Description = 'Commands for creating a new Windows user'
+PowerShellVersion = '4.0'
+RequiredModules = @('BOSH.Utils')
+FunctionsToExport = @('Add-Account','Remove-Account')
+CmdletsToExport = @()
+VariablesToExport = '*'
+AliasesToExport = @()
+PrivateData = @{
+    PSData = @{
+        Tags = @('BOSH')
+        LicenseUri = 'https://github.com/cloudfoundry-incubator/bosh-windows-stemcell-builder/blob/master/LICENSE'
+        ProjectUri = 'https://github.com/cloudfoundry-incubator/bosh-windows-stemcell-builder'
+    }
+}
+}

modules/BOSH.Account/BOSH.Account.psm1

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+<#
+.Synopsis
+    Add Windows user
+.Description
+    This cmdlet adds a Windows user
+#>
+function Add-Account {
+    Param(
+            [string]$User = $(Throw "Provide a user name"),
+            [string]$Password = $(Throw "Provide a password")
+         )
+    Write-Log "Add-Account"
+
+    Write-Log "Creating new local user $User."
+    & NET USER $User $Password /add /y /expires:never
+
+    $Group = "Administrators"
+
+    Write-Log "Adding local user $User to $Group."
+    $adsi = [ADSI]"WinNT://$env:COMPUTERNAME"
+    Write-Log $adsi
+    $AdminGroup = $adsi.Children | where {$_.SchemaClassName -eq 'group' -and $_.Name -eq $Group }
+    Write-Log $AdminGroup
+    $UserObject = $adsi.Children | where {$_.SchemaClassName -eq 'user' -and $_.Name -eq $User }
+    Write-Log $UserObject
+    $AdminGroup.Add($UserObject.Path)
+    Write-Log "Completed adding $User to $Group"
+}
+
+<#
+.Synopsis
+Remove Windows user
+.Description
+This cmdlet removes a Windows user
+#>
+function Remove-Account {
+    Param(
+            [string]$User = $(Throw "Provide a user name")
+         )
+    Write-Log "Remove-Account"
+    Write-Log "Removing local user $User."
+    $adsi = [ADSI]"WinNT://$env:COMPUTERNAME"
+    $adsi.Delete('User', $User)
+    Move-Item -Path "C:\Users\$User" -Destination "$env:windir\Temp\$User" -Force -ErrorAction Ignore
+}