Implement new setup key resource (#178)

This change implements a new resource called SetupKey that manages the
lifecycle of setup keys and stores them in secrets.

A major change here is that we are also switching to using SSA for
resource management.

Part of #172

Signed-off-by: Philip Laine <philip.laine@gmail.com>

pkg/applyconfigurations/api/v1alpha1/setupkeyspec.go

@@ -0,0 +1,40 @@
+// Code generated by controller-gen. DO NOT EDIT.
+
+package v1alpha1
+
+import (
+	v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+)
+
+// SetupKeySpecApplyConfiguration represents a declarative configuration of the SetupKeySpec type for use
+// with apply.
+//
+// SetupKeySpec defines the desired state of SetupKey
+type SetupKeySpecApplyConfiguration struct {
+	// Ephemeral decides if peers added with the key are ephemeral or not.
+	Ephemeral *bool `json:"ephemeral,omitempty"`
+	// Duration sets how long the setup key is valid for.
+	Duration *v1.Duration `json:"duration,omitempty"`
+}
+
+// SetupKeySpecApplyConfiguration constructs a declarative configuration of the SetupKeySpec type for use with
+// apply.
+func SetupKeySpec() *SetupKeySpecApplyConfiguration {
+	return &SetupKeySpecApplyConfiguration{}
+}
+
+// WithEphemeral sets the Ephemeral field in the declarative configuration to the given value
+// and returns the receiver, so that objects can be built by chaining "With" function invocations.
+// If called multiple times, the Ephemeral field is set to the value of the last call.
+func (b *SetupKeySpecApplyConfiguration) WithEphemeral(value bool) *SetupKeySpecApplyConfiguration {
+	b.Ephemeral = &value
+	return b
+}
+
+// WithDuration sets the Duration field in the declarative configuration to the given value
+// and returns the receiver, so that objects can be built by chaining "With" function invocations.
+// If called multiple times, the Duration field is set to the value of the last call.
+func (b *SetupKeySpecApplyConfiguration) WithDuration(value v1.Duration) *SetupKeySpecApplyConfiguration {
+	b.Duration = &value
+	return b
+}