control-plane: use custom cloud-provider-equinix-metal image
This image includes the PR:
+# Custom image that includes the https://github.com/equinix/cloud-provider-equinix-metal/pull/201
+image:
+ repository: quay.io/kinvolk/cloud-provider-equinix-metal
+ tag: v3.2.2-1-g621c454
config:
apiKey: ${api_key}
projectID: ${project_id}
