1.2 Upgrade problems -- LB, Service upgrade failure, others

[denise]

The release notes specifically outlined these kind of outages for upgrade for 1.2.0.

Rancher Release - v1.2.0

Release v1.2.0 Versions rancher/server:v1.2.0 rancher/agent:v1.1.0 rancher/lb-service-haproxy:v0.4.2 rancher-compose-v0.12.0 rancher-v0.4.0 Note: With our new infrastructure services, we no longer launch a network agent and have moved to a specific HAProxy image for load balancers. Therefore, we no longer need rancher/agent-instance. Important Starting with version 1.2.0, Rancher no longer supports AWS ELBs and only supports AWS ALB (Application Load Balancers). Please update your high avai…