cmd/k8s-operator,k8s-operator: allow proxies accept advertized routes. (#12388)

Add a new .spec.tailscale.acceptRoutes field to ProxyClass,
that can be optionally set to true for the proxies to
accept routes advertized by other nodes on tailnet (equivalent of
setting --accept-routes to true).

Updates tailscale/tailscale#12322,tailscale/tailscale#10684

Signed-off-by: Irbe Krumina <irbe@tailscale.com>

k8s-operator/apis/v1alpha1/types_proxyclass.go

@@ -62,6 +62,20 @@ type ProxyClassSpec struct {
 	// recommend that you use those for debugging purposes.
 	// +optional
 	Metrics *Metrics `json:"metrics,omitempty"`
+	// TailscaleConfig contains options to configure the tailscale-specific
+	// parameters of proxies.
+	// +optional
+	TailscaleConfig *TailscaleConfig `json:"tailscale,omitempty"`
+}
+
+type TailscaleConfig struct {
+	// AcceptRoutes can be set to true to make the proxy instance accept
+	// routes advertized by other nodes on the tailnet, such as subnet
+	// routes.
+	// This is equivalent of passing --accept-routes flag to a tailscale Linux client.
+	// https://tailscale.com/kb/1019/subnets#use-your-subnet-routes-from-other-machines
+	// Defaults to false.
+	AcceptRoutes bool `json:"acceptRoutes,omitempty"`
 }
 
 type StatefulSet struct {

k8s-operator/apis/v1alpha1/zz_generated.deepcopy.go

@@ -494,6 +494,11 @@ func (in *ProxyClassSpec) DeepCopyInto(out *ProxyClassSpec) {
 		*out = new(Metrics)
 		**out = **in
 	}
+	if in.TailscaleConfig != nil {
+		in, out := &in.TailscaleConfig, &out.TailscaleConfig
+		*out = new(TailscaleConfig)
+		**out = **in
+	}
 }
 
 // DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new ProxyClassSpec.
@@ -619,3 +624,18 @@ func (in Tags) DeepCopy() Tags {
 	in.DeepCopyInto(out)
 	return *out
 }
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *TailscaleConfig) DeepCopyInto(out *TailscaleConfig) {
+	*out = *in
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new TailscaleConfig.
+func (in *TailscaleConfig) DeepCopy() *TailscaleConfig {
+	if in == nil {
+		return nil
+	}
+	out := new(TailscaleConfig)
+	in.DeepCopyInto(out)
+	return out
+}