Migrate helm chart from archived helm charts repo. (#241)

* Migrate helm chart from archived helm charts repo. Add github action which generates helm chart releases.

Signed-off-by: Adam Hamsik <adam.hamsik@lablabs.io>

* Add helm chart repository documentation

Signed-off-by: Adam Hamsik <adam.hamsik@lablabs.io>

.github/workflows/lint-test.yaml

@@ -0,0 +1,29 @@
+name: Lint and Test Charts
+
+on: pull_request
+
+jobs:
+  lint-test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+
+      - name: Run chart-testing (lint)
+        id: lint
+        uses: helm/chart-testing-action@v1.1.0
+        with:
+          command: lint
+          config: ct.yaml
+
+      - name: Create kind cluster
+        uses: helm/kind-action@v1.0.0
+        if: steps.lint.outputs.changed == 'true'
+
+      - name: Run chart-testing (install)
+        uses: helm/chart-testing-action@v1.1.0
+        with:
+          command: install
+          config: ct.yaml

.github/workflows/release.yaml

@@ -0,0 +1,38 @@
+name: Release Charts
+
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+
+      - name: Configure Git
+        run: |
+          git config user.name "$GITHUB_ACTOR"
+          git config user.email "$GITHUB_ACTOR@users.noreply.github.com"
+
+      - name: Install Helm
+        run: |
+          curl -fsSLo get_helm.sh https://raw.githubusercontent.com/helm/helm/master/scripts/get-helm-3
+          chmod 700 get_helm.sh
+          ./get_helm.sh
+
+      - name: Add dependency chart repos
+        run: |
+          helm repo add stable https://charts.helm.sh/stable
+          helm repo add incubator https://charts.helm.sh/incubator
+
+      - name: Run chart-releaser
+        uses: helm/chart-releaser-action@v1.0.0
+        # with:
+        #   charts_dir: kubernetes/charts/coredns
+        env:
+          CR_TOKEN: "${{ secrets.GITHUB_TOKEN }}"