outposts: call controller.down on outpost pre_delete

docs/upgrading/to-0.12.md

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+# Upgrading to 0.12
+
+This update brings these headline features:
+
+- Rewrite Outpost state Logic, which now supports multiple concurrent Outpost instances.
+- Add Kubernetes Integration for Outposts, which deploys and maintains Outposts with High Availability in a Kubernetes Cluster
+- Add System Task Overview to see all background tasks, their status, the log output, and retry them
+- Alerts now disappear automatically
+
+## Upgrading
+
+Docker-compose users can upgrade just as usual.
+
+For Kubernetes users, there are some changes to the helm values.
+
+The values change from
+
+```yaml
+config:
+  # Optionally specify fixed secret_key, otherwise generated automatically
+  # secret_key: _k*@6h2u2@q-dku57hhgzb7tnx*ba9wodcb^s9g0j59@=y(@_o
+  # Enable error reporting
+  error_reporting:
+    enabled: false
+    environment: customer
+    send_pii: false
+  # Log level used by web and worker
+  # Can be either debug, info, warning, error
+  log_level: warning
+```
+
+to
+
+```yaml
+config:
+  # Optionally specify fixed secret_key, otherwise generated automatically
+  # secretKey: _k*@6h2u2@q-dku57hhgzb7tnx*ba9wodcb^s9g0j59@=y(@_o
+  # Enable error reporting
+  errorReporting:
+    enabled: false
+    environment: customer
+    sendPii: false
+  # Log level used by web and worker
+  # Can be either debug, info, warning, error
+  logLevel: warning
+```
+
+in order to be consistent with the rest of the settings.
+
+There is also a new setting called `kubernetesIntegration`, which controls the Kubernetes integration for passbook. When enabled (the default), a Service Account is created, which allows passbook to deploy and update Outposts.