Fix errors produced when only some packages in a repo are building in a servicing update

In servicing builds, we may not produce all packages. This fixes errors produced about missing packages.

* Skip packages listed in NuGetPackageVerifier.json which cannot be found.
* Detect when shared sources packages are not building

files/KoreBuild/modules/sharedsources/sharedsources.csproj

@@ -69,7 +69,7 @@
       <NormalizedPackageVersion Condition="$(NormalizedPackageVersion.Contains('+'))">$(PackageVersion.Substring(0, $(PackageVersion.IndexOf('+'))))</NormalizedPackageVersion>
     </PropertyGroup>
 
-    <ItemGroup>
+    <ItemGroup Condition=" '$(IsPackable)' == 'true' ">
       <ArtifactInfo Include="$(PackageOutputPath)$(PackageId).$(NormalizedPackageVersion).nupkg">
         <ArtifactType>NuGetPackage</ArtifactType>
         <PackageId>$(PackageId)</PackageId>

modules/NuGetPackageVerifier/console/Program.cs

@@ -174,8 +174,7 @@ namespace NuGetPackageVerifier
                         var packagesWithId = packages.Where(p => p.Key.Id.Equals(packageId));
                         if (!packagesWithId.Any())
                         {
-                            logger.LogError("Couldn't find package '{0}' in the repo", packageId);
-                            totalErrors++;
+                            logger.LogInfo("Couldn't find package '{0}' in the repo. Skipping.", packageId);
                             continue;
                         }
 

test.ps1

@@ -1,5 +1,5 @@
 #requires -version 4
-[CmdletBinding(PositionalBinding = $true)]
+[CmdletBinding(PositionalBinding = $false)]
 param(
     [Parameter()]
     [string]$Command = 'default-build',