Have managed resource DeletionPolicy default to 'Delete'

[negz]

Signed-off-by: Nic Cope negz@rk0n.org

Description of your changes

Fixes #205

I have:

• Read and followed Crossplane's contribution process.
• Run make reviewable test to ensure this PR is ready for review.

How has this code been tested

I added a replace to my my provider-gcp go.mod and ran make generate:

--- a/package/crds/cache.gcp.crossplane.io_cloudmemorystoreinstances.yaml
+++ b/package/crds/cache.gcp.crossplane.io_cloudmemorystoreinstances.yaml
@@ -51,7 +51,8 @@ spec:
             description: A CloudMemorystoreInstanceSpec defines the desired state of a CloudMemorystoreInstance.
             properties:
               deletionPolicy:
-                description: DeletionPolicy specifies what will happen to the underlying external when this managed resource is deleted - either "Delete" or "Orphan" the external resource. The "Delete" policy is the default when no policy is specified.
+                default: Delete
+                description: DeletionPolicy specifies what will happen to the underlying external when this managed resource is deleted - either "Delete" or "Orphan" the external resource.
                 enum:
                 - Orphan
                 - Delete
@@ -106,6 +107,8 @@ spec:
                 - tier
                 type: object
               providerConfigRef:
+                default:
+                  name: default
                 description: ProviderConfigReference specifies how the provider that will be used to create, observe, update, and delete this managed resource should be configured.
                 properties:
                   name:

Note the providerConfigRed change is because provider-gcp master hasn't been bumped to include #252 yet.

[hasheddan]

Thanks @negz!