[stable/atlantis] fix the mount collision between repos.yaml and atlantis.yaml (#18434)

* stable/atlantis: fix mount collision when mounting configmap

Fixes a mount collision if both `repoConfig` and `config` are set in the values.yaml

Kubernetes mounts `config` which contains atlantis.yaml first then in the same dir (/etc/atlantis) mounts repos.yaml over it. So the server will not start since it's looking for `/etc/atlantis/atlantis.yaml`

Signed-off-by: Mike Zupan <mike@zcentric.com>

* bump the chart version

Signed-off-by: Mike Zupan <mike@zcentric.com>

stable/atlantis/Chart.yaml

@@ -2,7 +2,7 @@ apiVersion: v1
 appVersion: "v0.8.2"
 description: A Helm chart for Atlantis https://www.runatlantis.io
 name: atlantis
-version: 3.8.3
+version: 3.8.4
 keywords:
 - terraform
 home: https://www.runatlantis.io

stable/atlantis/templates/statefulset.yaml

@@ -265,12 +265,14 @@ spec:
           {{- end }}
           {{- if .Values.repoConfig }}
           - name: repo-config
-            mountPath: /etc/atlantis
+            mountPath: /etc/atlantis/repos.yaml
+            subPath: repos.yaml
             readOnly: true
           {{- end }}
           {{- if .Values.config }}
           - name: config
-            mountPath: /etc/atlantis
+            mountPath: /etc/atlantis/atlantis.yaml
+            subPath: atlantis.yaml
             readOnly: true
           {{- end }}
           {{- if .Values.extraVolumeMounts }}