gcr.io/accl-19-dev project has been deleted

I am attempting to run through the **Site Reliability Troubleshooting with Cloud Monitoring APM [ACE]** qwiklab and have discovered that it is now unusable.

The lab relies on this repo and specifically the skaffold setup being done in [blogs/microservices-demo-1](https://github.com/GoogleCloudPlatform/training-data-analyst/tree/master/blogs/microservices-demo-1).

It looks as though the project containing the images used to set up those microservice has been removed from GCR.

Following the steps in the qwiklab results in this state,

```
$ kc get pods
NAME READY STATUS RESTARTS AGE
adservice-6ff7b45b8d-nk2xs 0/1 ImagePullBackOff 0 14m
cartservice-5bb57bd6c5-sl9hr 0/1 ImagePullBackOff 0 14m
checkoutservice-6c55699fd4-825vc 0/1 ImagePullBackOff 0 14m
currencyservice-98dbb6bb8-v8jrt 0/1 ImagePullBackOff 0 14m
emailservice-5d8776d6cf-xvlgn 0/1 ImagePullBackOff 0 14m
frontend-6f7d4fb9d5-xtf47 0/1 ImagePullBackOff 0 14m
loadgenerator-84b646d669-pchj8 0/1 Init:0/1 0 14m
paymentservice-5c849496f6-pd9xg 0/1 ImagePullBackOff 0 14m
productcatalogservice-7f79cb8d98-tq5nn 0/1 ImagePullBackOff 0 14m
recommendationservice-6987c49c54-5ktv6 0/1 ImagePullBackOff 0 14m
redis-cart-7b754f8bd-kk2m9 1/1 Running 0 14m
shippingservice-775b5bc884-8gkdc 0/1 ImagePullBackOff 0 14m
```

And if we attempt to look at the container registry project, there is only bad news,

```
$ gcloud container images list --repository=gcr.io/accl-19-dev
ERROR: (gcloud.container.images.list) Bad status during token exchange: 403
b'{"errors":[{"code":"DENIED","message":"Project accl-19-dev has been deleted."}]}'
```

This renders the lab useless. Not sure if there is anything to do within this repo beyond alerting folks to the fact that the images used in this demo are no longer available.