Update README.md for device-registry #2238

Job	Run time
create image tag	1s
check changed microservice(s)	5s
build-push-deploy-auth	0s
build-push-deploy-kafka-connectors	0s
build-push-deploy-predict-service	0s
build-push-deploy-workflows	0s
build-push-deploy-device-registry	1m 59s
build-push-deploy-kafka-cluster	0s
build-push-deploy-kafka-cluster-operator	0s
build-push-deploy-kafka-topics	0s
build-push-deploy-data-mgt	0s
build-push-deploy-data-proxy	0s
build-push-deploy-analytics	0s
build-push-deploy-device-monitoring	0s
build-push-deploy-device-status	0s
build-push-deploy-device-uptime	0s
build-push-deploy-insights	0s
build-push-deploy-exceedances	0s
build-push-deploy-gp-model	0s
build-push-deploy-locate	0s
build-push-deploy-meta-data	0s
build-push-deploy-calibrate	0s
build-push-incentives	0s
build-push-deploy-view	0s
apply-nginx	0s
build-push-deploy-spatial	0s
	2m 5s

Provide feedback