Fix pg_dump cmd in velero pre backup hook

charts/sapl/v0.2.0/templates/velero-schedule-monthly.yaml

@@ -49,7 +49,10 @@ spec:
               app.kubernetes.io/name: postgresql
         pre:
           - exec:
-              command: "/opt/bitnami/postgresql/bin/pg_dump -U postgres sapl > /bitnami/postgresql/sapl.dump"
+              command: 
+                - "/bin/bash"
+                - "-c" 
+                - "/opt/bitnami/postgresql/bin/pg_dump -U postgres sapl > /bitnami/postgresql/sapl.dump"
               timeout: 360s
   useOwnerReferencesInBackup: false
 {{- end }}

charts/sapl/v0.2.0/templates/velero-schedule-weekdays.yaml

@@ -49,7 +49,10 @@ spec:
               app.kubernetes.io/name: postgresql
         pre:
           - exec:
-              command: "/opt/bitnami/postgresql/bin/pg_dump -U postgres sapl > /bitnami/postgresql/sapl.dump"
+              command: 
+                - "/bin/bash"
+                - "-c"
+                - "/opt/bitnami/postgresql/bin/pg_dump -U postgres sapl > /bitnami/postgresql/sapl.dump"
               timeout: 360s
   useOwnerReferencesInBackup: false
 {{- end }}

charts/sapl/v0.2.0/templates/velero-schedule-weekly.yaml

@@ -49,7 +49,10 @@ spec:
               app.kubernetes.io/name: postgresql
         pre:
           - exec:
-              command: "/opt/bitnami/postgresql/bin/pg_dump -U postgres sapl > /bitnami/postgresql/sapl.dump"
+              command: 
+                - "/bin/bash"
+                - "-c" 
+                - "/opt/bitnami/postgresql/bin/pg_dump -U postgres sapl > /bitnami/postgresql/sapl.dump"
               timeout: 360s
   useOwnerReferencesInBackup: false
 {{- end }}