Publish the agnostic 'DEB' installer package to all three feeds.

Author: jbeisner

build/LinuxDistrosNativeInstaller.props

@@ -1,5 +1,15 @@
 <Project>
   <ItemGroup>
+    <LinuxDistrosNeedNativeInstaller Include="ubuntu.16.04-x64">
+      <InstallerExtension>deb</InstallerExtension>
+      <RepositoryId>$(ubuntu1604x64RepositoryId)</RepositoryId>
+      <DistroNameInInstaller>x64</DistroNameInInstaller>
+    </LinuxDistrosNeedNativeInstaller>
+    <LinuxDistrosNeedNativeInstaller Include="ubuntu.14.04-x64">
+      <InstallerExtension>deb</InstallerExtension>
+      <RepositoryId>$(ubuntu1404x64RepositoryId)</RepositoryId>
+      <DistroNameInInstaller>x64</DistroNameInInstaller>
+    </LinuxDistrosNeedNativeInstaller>
     <LinuxDistrosNeedNativeInstaller Include="debian.8-x64">
       <DockerFolder>debian</DockerFolder>
       <InstallerExtension>deb</InstallerExtension>

build/SandBoxAndPackageInParallel.proj

@@ -3,10 +3,10 @@
 
   <Import Project="$(MSBuildThisFileDirectory)/LinuxDistrosNativeInstaller.props" />
 
-  <Target Name="RunInSandBoxAndPackage" >
+  <Target Name="RunInSandBoxAndPackage" Condition=" '%(LinuxDistrosNeedNativeInstaller.DockerFolder)' != '' ">
       <MSBuild Projects="$(MSBuildThisFileDirectory)/SandBoxAndPackage.proj"
-      Targets="SandBoxAndPackage"
-            Properties="RepoRoot=$(RepoRoot);
+               Targets="SandBoxAndPackage"
+               Properties="RepoRoot=$(RepoRoot);
             LinuxDistrosNeedNativeInstaller=%(LinuxDistrosNeedNativeInstaller.Identity);
             DockerFolder=%(LinuxDistrosNeedNativeInstaller.DockerFolder);
             BuildConfiguration=$(BuildConfiguration);