add API trigger for helm charts index (#281)

.circleci/config.yml

@@ -6,8 +6,30 @@ jobs:
       - checkout
       - run: make test-image
       - run: make test-unit
+  update-helm-charts-index:
+    docker:
+      - image: circleci/golang:latest
+    steps:
+      - run:
+          name: update helm-charts index
+          command: |
+            curl --show-error --silent --fail --user "${CIRCLE_TOKEN}:" \
+                -X POST \
+                -H 'Content-Type: application/json' \
+                -H 'Accept: application/json' \
+                -d "{\"branch\": \"master\",\"parameters\":{\"SOURCE_REPO\": \"${CIRCLE_PROJECT_USERNAME}/${CIRCLE_PROJECT_REPONAME}\",\"SOURCE_TAG\": \"${CIRCLE_TAG}\"}}" \
+                "${CIRCLE_ENDPOINT}/${CIRCLE_PROJECT}/pipeline"
 workflows:
   version: 2
   build_and_test:
     jobs:
-      - bats-unit-test 
+      - bats-unit-test
+  update-helm-charts-index:
+    jobs:
+      - update-helm-charts-index:
+          context: helm-charts-trigger
+          filters:
+            tags:
+              only: /^v.*/
+            branches:
+              ignore: /.*/