tf-a-tftf-main: use 'integration' branch of TF-A by default

Due to the possibility that master branch of TF-A-test may have
some companion changes in integration branch of TF-A, the
'tf-a-tftf-main' job now uses 'integration' branch of TF-A by
default.

Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
Change-Id: I090465835057f59b5e355d3afc6dc4f2519cfbe1
diff --git a/tf-a-tftf-main.yaml b/tf-a-tftf-main.yaml
index 6cef39b..c03f944 100644
--- a/tf-a-tftf-main.yaml
+++ b/tf-a-tftf-main.yaml
@@ -22,11 +22,11 @@
           description: "Gerrit project name for Trusted Firmware-A."
       - string:
           name: TF_GERRIT_BRANCH
-          default: "refs/heads/master"
+          default: "refs/heads/integration"
           description: "Git project branch for Trusted Firmware-A."
       - string:
           name: TF_GERRIT_REFSPEC
-          default: "+refs/heads/master:refs/remotes/origin/master"
+          default: "+refs/heads/integration:refs/remotes/origin/integration"
           description: "Git refspec for Trusted Firmware-A."
       - string:
           name: TFTF_GERRIT_PROJECT