Spring Cloud Services Deployment fails with can't resolve link error in PAS 2.2

Products

• VMware Spring Runtime

Issue/Introduction

Symptoms:

Here is the error message:

Task 433 | 16:36:14 | Preparing deployment: Preparing deployment (00:00:00)
                    L Error: Failed to resolve links from deployment 'p-spring-cloud-services-bd8c1435c80fcfc0bcd9'. See errors below:
  - Can't resolve link 'credhub' for job 'deploy-service-broker' in instance group 'deploy-service-broker' in deployment 'p-spring-cloud-services-bd8c1435c80fcfc0bcd9'
Task 433 | 16:36:14 | Error: Failed to resolve links from deployment 'p-spring-cloud-services-bd8c1435c80fcfc0bcd9'. See errors below:
  - Can't resolve link 'credhub' for job 'deploy-service-broker' in instance group 'deploy-service-broker' in deployment 'p-spring-cloud-services-bd8c1435c80fcfc0bcd9'

Environment

Cause

This occurs because the tile metadata includes a link syntax that is no longer supported in the latest version of the BOSH Director.  The "{}" needs to be "null" in the below example.  The following will be observed in the Operations Manager Changelog when this issue occurs. 

+   jobs:
+   - consumes:
+       credhub: {}

The correct syntax for this BOSH link should be "null" in order to represent a null link

+   jobs:
+   - consumes:
+       credhub: null

Resolution

Pivotal Application Service version 2.2 requires SCS tile version 1.5.6. Upgrading to SCS version 1.5.6 will satisfy the BOSH links requirement and the preparing deployment step will succeed.