Add option to define namespace labels and annotations

This gives us some flexibilty and can be helpful in multiple situations.
The main usecase currently is that we can schedule crossplane on infra
nodes on OpenShift using the annotation `openshift.io/node-selector`

class/defaults.yml

@@ -1,6 +1,9 @@
 parameters:
   crossplane:
     namespace: syn-crossplane
+    namespaceLabels: {}
+    namespaceAnnotations: {}
+
     charts:
       crossplane: 1.11.0
     images:

component/main.jsonnet

@@ -112,7 +112,12 @@ local namespace =
 ;
 
 {
-  '00_namespace': namespace,
+  '00_namespace': namespace {
+    metadata+: {
+      labels+: params.namespaceLabels,
+      annotations+: params.namespaceAnnotations,
+    },
+  },
   '01_rbac_finalizer_clusterrole': rbacFinalizerRole,
   '01_rbac_finalizer_clusterrolebinding': rbacFinalizerRoleBinding,
   [if std.length(providers) > 0 then '10_providers']: providers,

docs/modules/ROOT/pages/references/parameters.adoc

@@ -10,6 +10,22 @@ default:: `syn-crossplane`
 
 The namespace in which to deploy Crossplane.
 
+== `namespaceLabels`
+
+[horizontal]
+type:: dict
+default:: `{}`
+
+Additional labels to add to the created namespace.
+
+== `namespaceAnnotations`
+
+[horizontal]
+type:: dict
+default:: `{}`
+
+Additional annotations to add to the created namespace.
+
 == `providers`
 
 [horizontal]

tests/golden/openshift4/crossplane/crossplane/00_namespace.yaml

@@ -1,7 +1,9 @@
 apiVersion: v1
 kind: Namespace
 metadata:
-  annotations: {}
+  annotations:
+    openshift.io/node-selector: node-role.kubernetes.io/infra=
   labels:
+    foo: bar
     name: syn-crossplane
   name: syn-crossplane

tests/openshift4.yml

@@ -1,4 +1,8 @@
 parameters:
   facts:
     distribution: openshift4
-  crossplane: {}
+  crossplane:
+    namespaceLabels:
+      foo: bar
+    namespaceAnnotations:
+      openshift.io/node-selector: node-role.kubernetes.io/infra=