Use empty string instead of null for default value (#27902)

mmitche · web-flow · commit 70e85dc9d41c · 2018-03-09T09:32:56.000-08:00
Null can only be used for secrets
diff --git a/buildpipeline/DotNet-CoreFx-Trusted-Linux.json b/buildpipeline/DotNet-CoreFx-Trusted-Linux.json
@@ -399,7 +399,7 @@
       "allowOverride": true
     },
     "ProductBuildId": {
-      "value": null,
+      "value": "",
       "allowOverride": true
     },
     "PB_BuildArguments": {
diff --git a/buildpipeline/DotNet-CoreFx-Trusted-OSX.json b/buildpipeline/DotNet-CoreFx-Trusted-OSX.json
@@ -304,7 +304,7 @@
       "allowOverride": true
     },
     "ProductBuildId": {
-      "value": null,
+      "value": "",
       "allowOverride": true
     },
     "PB_Label": {
diff --git a/buildpipeline/DotNet-CoreFx-Trusted-Windows.json b/buildpipeline/DotNet-CoreFx-Trusted-Windows.json
@@ -424,7 +424,7 @@
       "allowOverride": true
     },
     "ProductBuildId": {
-      "value": null,
+      "value": "",
       "allowOverride": true
     },
     "PB_BuildArguments": {
