Adding Steps for PSScriptAnalyzer and Installing PSDevOps.

Adding PowerShell Static Analysis Stage

Ado/Stages/PowerShellStaticAnalysis.psd1

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+@{
+    stage = 'PowerShellStaticAnalysis'
+    displayName = 'Static Analysis'
+    condition= "and(succeeded())"
+    jobs = @(@{
+        job = 'PSScriptAnalyzer'
+        displayName = 'PSScriptAnalyzer'
+        pool=@{
+            vmImage= 'vs2017-win2016'
+        }
+        steps = @('InstallPSDevOps', 'InstallPSScriptAnalyzer','RunPSScriptAnalyzer')
+    })
+}

Ado/Steps/InstallPSDevOps.ps1

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+Install-Module -Name PSDevOps -Repository PSGallery -Force -Scope CurrentUser
+Import-Module PSDevOps -Force -PassThru

Ado/Steps/InstallPSScriptAnalyzer.ps1

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+Install-Module -Name PSScriptAnalyzer -Repository PSGallery -Force -Scope CurrentUser
+Import-Module PSScriptAnalyzer -Force -PassThru

Ado/Steps/RunPSScriptAnalyzer.ps1

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+Import-Module PSScriptAnalyzer, PSDevOps
+$invokeScriptAnalyzerSplat = @{Path='.\'}
+if ($ENV:PSScriptAnalyzer_Recurse) {
+    $invokeScriptAnalyzerSplat.Recurse = $true
+}
+$result = Invoke-ScriptAnalyzer @invokeScriptAnalyzerSplat
+
+foreach ($r in $result) {
+    if ('information', 'warning' -contains $r.Severity) {
+        Write-ADOWarning -Message $r.Message -SourcePath $r.ScriptPath -LineNumber $r.LineNumber -ColumnNumber $r.ColumnNumber
+    }
+    elseif ($r.Severity -eq 'Error') {
+        Write-ADOError -Message $r.Message -SourcePath $r.ScriptPath -LineNumber $r.LineNumber -ColumnNumber $r.ColumnNumber
+    }
+}