tf-a-lts2.8-tftf-gerrit-tforg-l*: Set CI_REFSPEC to lts-v2.8 branch

Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
Change-Id: Ibe436ced11b049d7684ca1e94eb1ee2f5b140d13
diff --git a/tf-a-lts2.8-tftf-gerrit-tforg-l2.yaml b/tf-a-lts2.8-tftf-gerrit-tforg-l2.yaml
index f6478ca..80f05c9 100644
--- a/tf-a-lts2.8-tftf-gerrit-tforg-l2.yaml
+++ b/tf-a-lts2.8-tftf-gerrit-tforg-l2.yaml
@@ -37,6 +37,9 @@
             default: ${GERRIT_REFSPEC}
             description: 'Parameter only used by the clone script'
         - string:
+            name: CI_REFSPEC
+            default: '+refs/heads/lts-v2.8:refs/remotes/origin/lts-v2.8'
+        - string:
             name: SHARE_FOLDER
             default: '/srv/shared/${JOB_NAME}/${BUILD_NUMBER}'
             description: 'Folder containing shared repositories for downstream pipeline jobs'