allow norestore switch for regular workflow (#6371)

Author: brettfo

eng/Build.ps1

@@ -22,6 +22,7 @@ param (
 
     # Actions
     [switch][Alias('r')]$restore,
+    [switch]$noRestore,
     [switch][Alias('b')]$build,
     [switch]$rebuild,
     [switch]$sign,
@@ -104,6 +105,10 @@ function Process-Arguments() {
         $script:testVs = $True
     }
 
+    if ($noRestore) {
+        $script:restore = $False;
+    }
+
     foreach ($property in $properties) {
         if (!$property.StartsWith("/p:", "InvariantCultureIgnoreCase")) {
             Write-Host "Invalid argument: $property"

eng/build.sh

@@ -91,6 +91,9 @@ while [[ $# > 0 ]]; do
     --restore|-r)
       restore=true
       ;;
+    --norestore)
+      restore=false
+      ;;
     --build|-b)
       build=true
       ;;