Rename stable to charts folder, link README

This is the common approach, stable doesnt make sense.
Also since coredns is the only chart in this repo, link the README
instead.

Signed-off-by: Manuel Rüger <[email protected]>

Author: mrueg

.github/workflows/lint-test.yaml

@@ -14,7 +14,7 @@ jobs:
       - name: Set up Helm
         uses: azure/setup-helm@v1
         with:
-          version: v3.6.0
+          version: v3.6.3
 
       - uses: actions/setup-python@v2
         with:
@@ -35,7 +35,7 @@ jobs:
         run: ct lint
 
       - name: Create kind cluster
-        uses: helm/kind-action@v1.1.0
+        uses: helm/kind-action@v1.2.0
         if: steps.list-changed.outputs.changed == 'true'
 
       - name: Run chart-testing (install)

.github/workflows/release.yaml

@@ -23,11 +23,9 @@ jobs:
       - name: Set up Helm
         uses: azure/setup-helm@v1
         with:
-          version: v3.6.0
+          version: v3.6.3
 
       - name: Run chart-releaser
         uses: helm/[email protected]
-        with:
-          charts_dir: stable
         env:
           CR_TOKEN: "${{ secrets.GITHUB_TOKEN }}"

README.md

@@ -0,0 +1 @@
+charts/coredns/README.md