Adding istanbul branch to CLM jobs

Signed-off-by: MichaelMorris <michael.morris@est.tech>
Issue-ID: SDC-3857
Change-Id: I815f3255a484f6873f6f8f762a46be3cc19cd339
diff --git a/jjb/sdc/sdc-sdc-helm-validator.yaml b/jjb/sdc/sdc-sdc-helm-validator.yaml
index 5b87809..2477488 100644
--- a/jjb/sdc/sdc-sdc-helm-validator.yaml
+++ b/jjb/sdc/sdc-sdc-helm-validator.yaml
@@ -71,5 +71,9 @@
     nexus-iq-namespace: 'onap-'
     project: 'sdc/sdc-helm-validator'
     project-name: 'sdc-sdc-helm-validator'
-    branch: 'master'
+    stream:
+      - 'master':
+          branch: 'master'
+      - 'istanbul':
+          branch: 'istanbul'
     mvn-settings: 'sdc-sdc-helm-validator-settings'