Added helm remote repo example

integration/examples/helm-remote-repo/README.md

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+### Example: deploy remote helm chart
+
+This example shows how to deploy a remote helm chart from a remote repo. This can be helpfulf or consuming other helm packages as part of your app.
+
+
+```yaml
+deploy:
+  helm:
+    releases:
+    - name: redis-release
+      repo: https://charts.bitnami.com/bitnami 
+      remoteChart: redis
+```
+
+This is the equivalent of the following on helm CLI:
+
+```bash
+helm repo add bitnami https://charts.bitnami.com/bitnami
+helm install redis-release bitnami/redis
+```

integration/examples/helm-remote-repo/skaffold.yaml

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+apiVersion: skaffold/v2beta13
+kind: Config
+deploy:
+  helm:
+    releases:
+    - name: redis-release
+      repo: https://charts.bitnami.com/bitnami 
+      remoteChart: redis