The version of ADF used in Java Cloud service is 18.104.22.168.0. PanelSpringBoard was added in 12.1.2, and therefore the ADF runtime in JCS does not support it.
There's no real "replacement" for PanelSpringBoard in ADF 22.214.171.124.0 since it is a new component.
I assume you are using JDev/ADF 12.1.2 for development. This is not recommended if your deployment target is JCS, due to the version mismatch. You should use JDev/ADF 126.96.36.199.0 to ensure compatibility with JCS.