Update logic to only allow install to attached devices

Tests/Public/Install-ZertoVra.Tests.ps1

@@ -5,8 +5,8 @@ $global:function = ((Split-Path -leaf $MyInvocation.MyCommand.Path).Split('.'))[
 Describe $global:function -Tag 'Unit', 'Source', 'Built' {
 
     Context "$global:function::Parameter Unit Tests" {
-        it "$global:function should have exactly 22 parameters defined" {
-            (get-command $global:function).Parameters.Count | Should -Be 22
+        It "$global:function should have exactly 22 parameters defined" {
+            (Get-Command $global:function).Parameters.Count | Should -Be 22
         }
 
         $ParameterTestCases = @(
@@ -35,7 +35,7 @@ Describe $global:function -Tag 'Unit', 'Source', 'Built' {
                 'IpAddr' {
                     $attrs = (Get-Command $global:function).Parameters[$ParameterName].Attributes
                     $attrs.Where{ $_ -is [ValidateScript] }.Count | Should -Be 1
-                    $attrs.Where{ $_ -is [ValidateScript] }.ScriptBlock | Should -Match '^\$_ \-match \[IPAddress\]\$_'
+                    $attrs.Where{ $_ -is [ValidateScript] }.ScriptBlock | Should -Match '\$_ \-match \[IPAddress\]\$_'
                 }
 
                 $null {

ZertoApiWrapper/Public/Install-ZertoVra.ps1

@@ -47,6 +47,10 @@ function Install-ZertoVra {
                     $identifier
                 }
             }
+            if ($datastoreIdentifier.count -gt 1) {
+                Write-Error "Datastore $datastoreName has more than one identifier associated with it on the specified host. Please review and try again."
+                Break
+            }
         }
 
         # Build the JSON object through an Ordered Hashtable.
@@ -71,7 +75,7 @@ function Install-ZertoVra {
         $vraBasic['VraNetworkDataApi'] = $vraBasicNetwork
 
         # Leverage WhatIf functionality to see what might happen, if WhatIf is not specified, attempt to install.
-        if ($PSCmdlet.ShouldProcess("Preforming operation 'Install-Vra' on Host $hostName with the following data \n $($vraBasic | convertto-json)")) {
+        if ($PSCmdlet.ShouldProcess("Preforming operation 'Install-Vra' on Host $hostName with the following data \n $($vraBasic | ConvertTo-Json)")) {
             Invoke-ZertoRestRequest -uri "vras" -method POST -body $($vraBasic | ConvertTo-Json)
         }
     } else {