Make build-node configurable

{project-name}-{stream}-docker-java-shell-daily job
needs to have the build-node parameter configurable.
This way, the projects will be able to select the
long live instance as build-node for their job.

For the rest of the projects using this template, the
build-node variable is set to the previous default
value.

Change-Id: Ie3722050870a04b0c2ca3108f6b526c7ac855def
Issue-ID: CIMAN-188
Signed-off-by: Jessica Wagantall <jwagantall@linuxfoundation.org>
diff --git a/jjb/dcaegen2/dcaegen2-services-prh.yaml b/jjb/dcaegen2/dcaegen2-services-prh.yaml
index ad1fa4a..b555fd8 100644
--- a/jjb/dcaegen2/dcaegen2-services-prh.yaml
+++ b/jjb/dcaegen2/dcaegen2-services-prh.yaml
@@ -11,6 +11,7 @@
           mvn-goals: 'clean package docker:build -DpushImage'
           # No-op
           script: '/bin/true'
+          build-node: 'ubuntu1604-docker-8c-8g'
 
     project: 'dcaegen2/services/prh'
     stream: