Frequently discarding old build for jobs that take up a lot of space

Change-Id: Ib3004ae6ad270648750301eb2cb8fb50b56620e2
diff --git a/jjb/voltha-scale.yaml b/jjb/voltha-scale.yaml
index 7ac47c0..adf2758 100644
--- a/jjb/voltha-scale.yaml
+++ b/jjb/voltha-scale.yaml
@@ -538,8 +538,8 @@
 
     properties:
       - cord-infra-properties:
-          build-days-to-keep: 30
-          artifact-num-to-keep: 15
+          build-days-to-keep: '{big-build-days-to-keep}'
+          artifact-num-to-keep: '{big-artifact-num-to-keep}'
 
     wrappers:
       - lf-infra-wrappers:
@@ -638,8 +638,8 @@
 
     properties:
       - cord-infra-properties:
-          build-days-to-keep: '{build-days-to-keep}'
-          artifact-num-to-keep: '{artifact-num-to-keep}'
+          build-days-to-keep: '{big-build-days-to-keep}'
+          artifact-num-to-keep: '{big-artifact-num-to-keep}'
 
     wrappers:
       - lf-infra-wrappers:
@@ -728,8 +728,8 @@
 
     properties:
       - cord-infra-properties:
-          build-days-to-keep: '{build-days-to-keep}'
-          artifact-num-to-keep: '{artifact-num-to-keep}'
+          build-days-to-keep: '{big-build-days-to-keep}'
+          artifact-num-to-keep: '{big-artifact-num-to-keep}'
 
     wrappers:
       - lf-infra-wrappers: