Fix cascade build references for docker.

The parent jobs that trigger the docker build may reside in
different jenkins job structure. Adding a parameter to configure
the parent job that should trigger the build.

Change-Id: I796976c97abc77feea1c9625c11023802ef2f54d
Issue-ID: VFC-728
Signed-off-by: Denes Nemeth <denes.nemeth@nokia.com>
2 files changed