* Initial commit for Ads Service.
* update comments for AdsService and AdsServiceClient
* Refactor Ads to Ad
Move building AdService to Docker
Use default setting for Stackdriver Exporter.
Add license text.
* Revert the projectId
- also remove commented code from frontend/rpc.go
* Add adservie to skaffold.yaml
* Remove skaffold-adservice.yaml
* Replace personal projectId with demo projectId.
* Fix the crash in adservice when ran in locally.
* Ignore .skaffold*yaml file and .kubernetes-manifests-*/ dir for easy ProjectID switch.
* Fixed review comments.
1. Changed Ad redirect urls to products.
2. Removed leftovers from Dockerfile/kub*manifests*yaml
3. Added retry for StackDriver.
4. Added log for Ad request.
5. Added comment for gradle caching.
6. Added README.md to src/adservice.
* Added GRPC Health service to Ad Service
Also added
1. timeout to getAd RPC call in frontend.
2. Async thread for stackdriver init.
