Update Jenkins build.yaml to add 4.x nightly builds for testing against JDK11

Description

The 4.x builds only test against JDK8 on Jenkins CI jobs. We also have no nightly builds configured for 4.x (we do for 3.x).

Environment

None

Pull Requests

None

Status

Assignee

Erik Merkle

Reporter

Erik Merkle

Labels

None

PM Priority

None

Reproduced in

None

External issue ID

None

External issue ID

None

External issue ID

None

External issue ID

None

External issue ID

None

External issue ID

None

Doc Impact

None

Reviewer

None

Size

None

Fix versions

Priority

Minor