Add deploy script for prod & stage & test

deploy-prod.sh

+#!/usr/bin/env sh
+
+helm upgrade --install -f ./helm-charts/helm-values/di-mapper-prod.yml di-mapper-prod-deployment ./helm-charts

deploy-stage.sh

+#!/usr/bin/env sh
+
+helm upgrade --install -f ./helm-charts/helm-values/di-mapper-stage.yml di-mapper-stage-deployment ./helm-charts

deploy-test.sh

+#!/usr/bin/env sh
+
+helm upgrade --install -f ./helm-charts/helm-values/di-mapper-test.yml di-mapper-test-deployment ./helm-charts