Flow archType to build script in global live build (dotnet#1133)

Author: safern

eng/build.sh

@@ -1,5 +1,7 @@
 #!/usr/bin/env bash
 
+set -ue
+
 source="${BASH_SOURCE[0]}"
 
 # resolve $source until the file is no longer a symlink

eng/pipelines/common/global-build-job.yml

@@ -33,7 +33,5 @@ jobs:
     - template: /eng/pipelines/common/clone-checkout-bundle-step.yml
 
     # Build
-    - script: |
-        $(setScriptToEchoAndFailOnNonZero)
-        $(Build.SourcesDirectory)$(dir)build$(scriptExt) -c ${{ parameters.buildConfig }}
+    - script: $(Build.SourcesDirectory)$(dir)build$(scriptExt) -c ${{ parameters.buildConfig }} -arch ${{ parameters.archType }}
       displayName: Build product