fix: fix OpenCI environment sourcing

Change-Id: I85ea32638638621779845dd7f049946e22e9dde5
Signed-off-by: Chris Kay <chris.kay@arm.com>
diff --git a/utils.sh b/utils.sh
index ead6ce7..7acab04 100644
--- a/utils.sh
+++ b/utils.sh
@@ -25,6 +25,8 @@
     source "$ci_root/arm-env.sh"
   elif echo "$JENKINS_URL" | grep -q "ci.trustedfirmware.org"; then
     source "$ci_root/openci-env.sh"
+  elif echo "$JENKINS_URL" | grep -q "ci.staging.trustedfirmware.org"; then
+    source "$ci_root/openci-staging-env.sh"
   fi
 fi