Automatically generate the bootstrap config documentation

The bootstrap config documentation may get out of sync as a result
of apiv1.BootstrapConfig changes.

To avoid this, we're going to automatically generate the documentation
based on the apiv1.BootstrapConfig structure definition and docstrings.

This change adds the necessary tooling as part of the ``docgen``
package, which may be reused for other structures or projects.

docs/src/_parts/bootstrap_config.md

@@ -0,0 +1,291 @@
+## cluster-config.network.enabled
+**Type:** `bool`<br>
+
+
+## cluster-config.dns.enabled
+**Type:** `bool`<br>
+
+
+## cluster-config.dns.cluster-domain
+**Type:** `string`<br>
+
+
+## cluster-config.dns.service-ip
+**Type:** `string`<br>
+
+
+## cluster-config.dns.upstream-nameservers
+**Type:** `[]string`<br>
+
+
+## cluster-config.ingress.enabled
+**Type:** `bool`<br>
+
+
+## cluster-config.ingress.default-tls-secret
+**Type:** `string`<br>
+
+
+## cluster-config.ingress.enable-proxy-protocol
+**Type:** `bool`<br>
+
+
+## cluster-config.load-balancer.enabled
+**Type:** `bool`<br>
+
+
+## cluster-config.load-balancer.cidrs
+**Type:** `[]string`<br>
+
+
+## cluster-config.load-balancer.l2-mode
+**Type:** `bool`<br>
+
+
+## cluster-config.load-balancer.l2-interfaces
+**Type:** `[]string`<br>
+
+
+## cluster-config.load-balancer.bgp-mode
+**Type:** `bool`<br>
+
+
+## cluster-config.load-balancer.bgp-local-asn
+**Type:** `int`<br>
+
+
+## cluster-config.load-balancer.bgp-peer-address
+**Type:** `string`<br>
+
+
+## cluster-config.load-balancer.bgp-peer-asn
+**Type:** `int`<br>
+
+
+## cluster-config.load-balancer.bgp-peer-port
+**Type:** `int`<br>
+
+
+## cluster-config.local-storage.enabled
+**Type:** `bool`<br>
+
+
+## cluster-config.local-storage.local-path
+**Type:** `string`<br>
+
+
+## cluster-config.local-storage.reclaim-policy
+**Type:** `string`<br>
+
+
+## cluster-config.local-storage.default
+**Type:** `bool`<br>
+
+
+## cluster-config.gateway.enabled
+**Type:** `bool`<br>
+
+
+## cluster-config.metrics-server.enabled
+**Type:** `bool`<br>
+
+
+## cluster-config.cloud-provider
+**Type:** `string`<br>
+
+
+## cluster-config.annotations
+**Type:** `map[string]string`<br>
+
+
+## control-plane-taints
+**Type:** `[]string`<br>
+
+Seed configuration for the control plane (flat on purpose). Empty values are ignored
+
+## pod-cidr
+**Type:** `string`<br>
+
+
+## service-cidr
+**Type:** `string`<br>
+
+
+## disable-rbac
+**Type:** `bool`<br>
+
+
+## secure-port
+**Type:** `int`<br>
+
+
+## k8s-dqlite-port
+**Type:** `int`<br>
+
+
+## datastore-type
+**Type:** `string`<br>
+
+
+## datastore-servers
+**Type:** `[]string`<br>
+
+
+## datastore-ca-crt
+**Type:** `string`<br>
+
+
+## datastore-client-crt
+**Type:** `string`<br>
+
+
+## datastore-client-key
+**Type:** `string`<br>
+
+
+## extra-sans
+**Type:** `[]string`<br>
+
+Seed configuration for certificates
+
+## ca-crt
+**Type:** `string`<br>
+
+Seed configuration for external certificates (cluster-wide)
+
+## ca-key
+**Type:** `string`<br>
+
+
+## client-ca-crt
+**Type:** `string`<br>
+
+
+## client-ca-key
+**Type:** `string`<br>
+
+
+## front-proxy-ca-crt
+**Type:** `string`<br>
+
+
+## front-proxy-ca-key
+**Type:** `string`<br>
+
+
+## front-proxy-client-crt
+**Type:** `string`<br>
+
+
+## front-proxy-client-key
+**Type:** `string`<br>
+
+
+## apiserver-kubelet-client-crt
+**Type:** `string`<br>
+
+
+## apiserver-kubelet-client-key
+**Type:** `string`<br>
+
+
+## admin-client-crt
+**Type:** `string`<br>
+
+
+## admin-client-key
+**Type:** `string`<br>
+
+
+## kube-proxy-client-crt
+**Type:** `string`<br>
+
+
+## kube-proxy-client-key
+**Type:** `string`<br>
+
+
+## kube-scheduler-client-crt
+**Type:** `string`<br>
+
+
+## kube-scheduler-client-key
+**Type:** `string`<br>
+
+
+## kube-controller-manager-client-crt
+**Type:** `string`<br>
+
+
+## kube-controller-manager-client-key
+**Type:** `string`<br>
+
+
+## service-account-key
+**Type:** `string`<br>
+
+
+## apiserver-crt
+**Type:** `string`<br>
+
+Seed configuration for external certificates (node-specific)
+
+## apiserver-key
+**Type:** `string`<br>
+
+
+## kubelet-crt
+**Type:** `string`<br>
+
+
+## kubelet-key
+**Type:** `string`<br>
+
+
+## kubelet-client-crt
+**Type:** `string`<br>
+
+
+## kubelet-client-key
+**Type:** `string`<br>
+
+
+## extra-node-config-files
+**Type:** `map[string]string`<br>
+
+ExtraNodeConfigFiles will be written to /var/snap/k8s/common/args/conf.d
+
+## extra-node-kube-apiserver-args
+**Type:** `map[string]string`<br>
+
+Extra args to add to individual services (set any arg to null to delete)
+
+## extra-node-kube-controller-manager-args
+**Type:** `map[string]string`<br>
+
+
+## extra-node-kube-scheduler-args
+**Type:** `map[string]string`<br>
+
+
+## extra-node-kube-proxy-args
+**Type:** `map[string]string`<br>
+
+
+## extra-node-kubelet-args
+**Type:** `map[string]string`<br>
+
+
+## extra-node-containerd-args
+**Type:** `map[string]string`<br>
+
+
+## extra-node-k8s-dqlite-args
+**Type:** `map[string]string`<br>
+
+
+## extra-node-containerd-config
+**Type:** `apiv1.MapStringAny`<br>
+
+Extra configuration for the containerd config.toml
+