Clouddriver is not caching subnets or server groups

Issue

When a user tries to create a deploy stage in a cluster that deploys to ECS, the deployment is not successful. An error is seen indicating that subnets/security groups/ IAM instance profiles for ECS cannot be found. The following is seen in the Clouddriver logs:

CD LOGS - Pod spin-clouddriver-...............:

2021-08-24 21:49:25.068  INFO 1 — [           main] n.s.c.e.s.EcsCredentialsLifeCycleHandler : ECS account, production...., was added. Scheduling caching agents
2021-08-24 21:50:06.605  INFO 1 — [cutionAction-10] c.n.s.c.e.p.a.ApplicationCachingAgent    : Evicting 1 ecsapplications in ........../ApplicationCachingAgent
2021-08-24 21:50:11.614  INFO 1 — [ecutionAction-8] c.n.s.c.e.p.a.TaskHealthCachingAgent     : Caching 2 task health checks in ...../TaskHealthCachingAgent
2021-08-24 21:50:11.700  INFO 1 — [cutionAction-10] c.n.s.c.e.p.a.EcsClusterCachingAgent     : Caching 3 ECS clusters in .......1/EcsClusterCachingAgent
2021-08-24 21:50:11.706  INFO 1 — [cutionAction-10] c.n.s.c.e.p.a.EcsClusterCachingAgent     : Evicting 1 ecsclusters in ......./EcsClusterCachingAgent
2021-08-24 21:50:11.837  INFO 1 — [ecutionAction-8] c.n.s.c.e.p.a.TaskHealthCachingAgent     : Evicting 2 healths in ......./TaskHealthCachingAgent
2021-08-24 21:50:26.901  INFO 1 — [ecutionAction-9] c.n.s.c.e.p.a.TaskDefinitionCachingAgent : Caching 2 task definitions in ......./TaskDefinitionCachingAgent
2021-08-24 21:50:26.932  INFO 1 — [ecutionAction-9] c.n.s.c.e.p.a.TaskDefinitionCachingAgent : Evicting 1 taskdefinitions in .........../TaskDefinitionCachingAgent
The following is seen in the SQL Agent Logs:
SQL CLEANUP AGENT LOGS
2021-08-24 22:05:56.733  INFO 1 — [cutionAction-48] c.n.s.c.s.c.SqlUnknownAgentCleanupAgent  : Scanning 'AmazonInstanceTypeCachingAgent/...... (22/38) cache records to cleanup
2021-08-24 22:05:56.744  INFO 1 — [cutionAction-48] c.n.s.c.s.c.SqlUnknownAgentCleanupAgent  : Scanning 'subnets' (......) cache records to cleanup
2021-08-24 22:05:56.755  INFO 1 — [cutionAction-48] c.n.s.c.s.c.SqlUnknownAgentCleanupAgent  : Scanning 'securityGroups' (24/38) cache records to cleanup
2021-08-24 22:05:56.768  INFO 1 — [cutionAction-48] c.n.s.c.s.c.SqlUnknownAgentCleanupAgent  : Scanning 'vpcs' (.....) cache records to cleanup

Cause

This issue is due to Spinnaker not caching ECS subnets and server groups in the cluster. There were naming issues within Clouddriver and Deck pertaining to servergroups and subnets:https://github.com/spinnaker/deck/pull/9524https://github.com/spinnaker/deck/pull/9032