CodeGen/Couchbase unit tests are failing for VS 16.1

[jefflill]

I upgraded to Visual Studio 16.1 and am seeing the CodeGen Couchbase unit test failure when they worked just before. This appears to be a framework problem with enumerating assemblies from the AppDomain while running in a unit tests. Other folks are seeing this too:

microsoft/vstest#2008

Here's the error I'm seeing:

Message: System.AggregateException : One or more errors occurred. (Unable to load one or more of the requested types.
Could not load file or assembly 'Microsoft.VisualStudio.ArchitectureTools.PEReader, Version=16.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'. The system cannot find the file specified.
Could not load file or assembly 'Microsoft.IntelliTrace.Core, Version=16.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'. The system cannot find the file specified.) (The following constructor parameters did not have matching fixture data: CouchbaseFixture couchbase)
---- System.Reflection.ReflectionTypeLoadException : Unable to load one or more of the requested types.
Could not load file or assembly 'Microsoft.VisualStudio.ArchitectureTools.PEReader, Version=16.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'. The system cannot find the file specified.
Could not load file or assembly 'Microsoft.IntelliTrace.Core, Version=16.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'. The system cannot find the file specified.
---- The following constructor parameters did not have matching fixture data: CouchbaseFixture couchbase

[jefflill]

FIXED