build: Run unit tests on the Jenkins server

The addition of [workspace] to the top level Cargo.toml is necessary to
have the binaries colocated together.

The Cargo.lock files have also been refreshed by the change to the
Cargo.toml.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>

Cargo.toml

@@ -18,3 +18,5 @@ default = []
 
 # Integration tests require a special environment to run in
 integration_tests = []
+
+[workspace]