Make Cloud Builder Faster

This should make Cloud Builder faster
- Request an 8 core machine
- Move the test and build steps to be parralel.

cloudbuild.yaml

@@ -24,15 +24,21 @@ steps:
 - name: "make-docker"
   dir: "build"
   args: ["pull-build-image"] # pull the build image if it exists
+  id: pull-build-image
 - name: "make-docker"
   dir: "build"
   args: [ "test" ] # run tests
+  waitFor: ['pull-build-image']
+  id: tests
 - name: "make-docker"
   dir: "build"
   args: [ "build", "push" ] # build all the things, and push images
+  waitFor: ['pull-build-image']
+  id: build
 - name: 'gcr.io/cloud-builders/gsutil'
   dir: "sdks/cpp/bin"
   args: ['cp', '*.tar.gz', 'gs://agones-artifacts/cpp-sdk']
+  waitFor: ['build', 'tests']
 - name: 'gcr.io/cloud-builders/gsutil'
   dir: "sdks/cpp/bin"
   args: ['cp', '*.zip', 'gs://agones-artifacts/cpp-sdk']
@@ -44,3 +50,5 @@ steps:
   args: ["push-build-image"] # push the build image (which won't do anything if it's already there)
 timeout: "1h"
 images: ['gcr.io/$PROJECT_ID/agones-controller', 'gcr.io/$PROJECT_ID/agones-sdk']
+options:
+ machineType: 'N1_HIGHCPU_8'