collection: rename helm-apps to helm_apps (#13553)

needed for compatibily with Galaxy

roles/helm_apps/README.md

@@ -0,0 +1,39 @@
+Role Name
+=========
+
+This role is intended to be used to fetch and deploy Helm Charts as part of
+cluster installation or upgrading with kubespray.
+
+Requirements
+------------
+
+The role needs to be executed on a host with access to the Kubernetes API, and
+with the helm binary in place.
+
+Role Variables
+--------------
+
+See meta/argument_specs.yml
+
+Playbook example:
+
+```yaml
+---
+- hosts: kube_control_plane[0]
+  gather_facts: no
+  roles:
+    - name: helm_apps
+      releases:
+        - name: app
+          namespace: app
+          chart_ref: simple-app/simple-app
+        - name: app2
+          namespace: app
+          chart_ref: simple-app/simple-app
+          wait_timeout: "10m" # override the same option in `release_common_opts`
+      repositories:
+        - name: simple-app
+          url: "https://blog.leiwang.info/simple-app"
+      release_common_opts:
+        wait_timeout: "5m"
+```