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

Change-Id: Ib3004ae6ad270648750301eb2cb8fb50b56620e2
diff --git a/jjb/siab.yaml b/jjb/siab.yaml
index 727a975..bbecf55 100644
--- a/jjb/siab.yaml
+++ b/jjb/siab.yaml
@@ -23,8 +23,8 @@
 
     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:
@@ -73,8 +73,8 @@
 
     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:
@@ -123,8 +123,8 @@
 
     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:
@@ -174,8 +174,8 @@
 
     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:
@@ -226,4 +226,3 @@
           branch-regexp: 'master'
           dependency-jobs: '{dependency-jobs}'
           file-include-regexp: '{siab-projects-regexp}'
-