Create new "DeprecatedTests" build target.
Create new "DeprecatedTests" build target.


Former-commit-id: 98b5413b55bd9532a59249c7d0be6ce4d69fb8df
rob-somerville/riak-dotnet-client,basho/riak-dotnet-client,rob-somerville/riak-dotnet-client,basho/riak-dotnet-client