K8s Feature (#124)

Adds the ability to use a kubernetes container to run builds that are too large for the local machine running the unity-builder. Logs are streamed back during the build. Build results can then be downloaded separately.

ReleaseLockAndAttemptShutdown.sh

@@ -0,0 +1,13 @@
+kubectl delete ns ns-unity-builder-$NSID
+
+# do any unity-builder namespaces remain?
+namespaceCount=$(kubectl get ns --output json | jq ".items | .[] | select(.metadata.labels.app == \"unity-builder\") | select(.status.phase != \"TERMINATING\")" | jq -s "length")
+echo $namespaceCount
+if [ "$namespaceCount" != "0" ]
+then
+   echo "let next cluster delete"
+   exit 0
+else
+   echo "delete cluster"
+   gcloud container clusters delete $GKE_CLUSTER --zone $GKE_ZONE --project $GKE_PROJECT --quiet
+fi