Merge pull request #2080 from barney-s/simple-gcp

Adding a simple GCP example that creates a storage bucket

experiments/compositions/samples/FirstGCPComposition/README.md

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+# Storage Bucket with CORS and Retention
+
+## Create the composition
+
+```
+kubectl create -f composition/cors-bucket.yaml
+```
+
+## Create a CRBucket instance
+
+Create a new `Team` CR
+
+```
+kubectl apply -f - <<EOF
+apiVersion: facade.compositions.google.com/v1
+kind: CRBucket
+metadata:
+  name: example-bucket
+  namespace: config-control
+spec:
+  corsurl: "something.foobar.com"
+  retention: 10 # days
+EOF
+```
+
+## Cleaning up
+
+When done with testing, cleanup the resources by deleting the `CRBucket` CRs.
+
+```
+kubectl delete crbucket -n config-control example-bucket
+```

experiments/compositions/samples/FirstGCPComposition/composition/cors-bucket.yaml

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+# Copyright 2024 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+apiVersion: composition.google.com/v1alpha1
+kind: Composition
+metadata:
+  name: cors-bucket
+spec:
+  inputAPIGroup: crbuckets.facade.compositions.google.com    # Facade API
+  expanders:
+  - type: jinja2  # inbuilt jinja2 expander
+    name: bucket 
+    template: |
+       apiVersion: storage.cnrm.cloud.google.com/v1beta1
+       kind: StorageBucket
+       metadata:
+         annotations:
+           cnrm.cloud.google.com/force-destroy: "false"
+         # StorageBucket names must be globally unique
+         name: {{ context.spec.project }}-{{ crbuckets.metadata.name }}
+         namespace: config-connector
+       spec:
+         lifecycleRule:
+           - action:
+               type: Delete
+             condition:
+               age: {{ crbuckets.spec.retention }}
+               withState: ANY
+         versioning:
+           enabled: true
+         uniformBucketLevelAccess: true
+         {% if crbuckets.spec.corsurl != '' %}
+         cors:
+           - origin: ["{{ crbuckets.spec.corsurl }}"]
+             responseHeader: ["Content-Type"]
+             method: ["GET", "HEAD", "DELETE"]
+             maxAgeSeconds: 3600
+         {% endif %}
+---
+apiVersion: composition.google.com/v1alpha1
+kind: Facade
+metadata:
+  name: crbucket
+  namespace: default
+spec:
+  facadeKind: CRBucket
+  openAPIV3Schema:
+  # Schema for the `spec` field
+    type: object
+    required:
+    - retention
+    - corsurl
+    properties:
+      corsurl:
+        type: string
+      retention:
+        type: integer