Updating Nuget package restore for static analysis tools

Author: markcowl

build.proj

@@ -137,6 +137,9 @@
     <!-- Restore packages -->
     <Exec Command="$(NuGetCommand) restore %(CmdletSolutionsToBuild.FullPath) $(NuGetRestoreConfigSwitch)" 
           ContinueOnError="false" />
+    <!-- Restore packages for static analysis-->
+    <Exec Command="$(NuGetCommand) restore %(StaticAnalysis.FullPath) $(NuGetRestoreConfigSwitch)"
+          ContinueOnError="false" />
 
     <!--Restore the xunit runner needed to run unit tests-->
     <Exec Command="$(NuGetCommand) restore $(MSBuildProjectDirectory)\packages.config -PackagesDirectory $(MSBuildProjectDirectory)\packages" />