Incorporate Build into Elafros. (knative#36)

* Incorporate Build into Elafros.

This copies over the Build type definitions and generates clients for them.

This incorporates BuildSpec into RevisionTemplate and BuildName into Revision.

A RevisionTemplate with a BuildSpec will stamp out a Build during reconciliation, and feed the resulting BuildName to the Revision.

The Revision will reflect the Build's progress in its Status, and stand up resources upon completion.

Fixes: knative#7

.bazelrc

@@ -1,2 +1,3 @@
 build --workspace_status_command=./print-workspace-status.sh
 run --workspace_status_command=./print-workspace-status.sh
+test --test_output=errors

BUILD

@@ -84,11 +84,10 @@ k8s_objects(
     ],
 )
 
+# All of our stuff goes here.
 k8s_objects(
-    name = "everything",
+    name = "elafros",
     objects = [
-        # We depend on Istio.
-        ":istio",
         ":namespace",
         ":authz",
         ":crds",
@@ -97,3 +96,12 @@ k8s_objects(
         ":elawebhookservice",
     ],
 )
+
+k8s_objects(
+    name = "everything",
+    objects = [
+        ":istio",  # We depend on Istio.
+        # TODO(mattmoor): Add the Build stuff here once we can import it properly.
+        ":elafros",
+    ],
+)