Add cord-6.1 branch to documentation publish jobs

Change-Id: Ic0742c2d758e2359735dbc246236768af30ab397
diff --git a/jjb/defaults.yaml b/jjb/defaults.yaml
index 12ae6c9..4ec37b7 100644
--- a/jjb/defaults.yaml
+++ b/jjb/defaults.yaml
@@ -65,7 +65,7 @@
     # list of supported branches, for branch-regexp
     supported-branches-regexp: '^(master|cord-6.1|seba-1.0|cord-6.0|cord-5.0|cord-4.1|cord-4.0)$'
     legacy-branches-regexp: '^(cord-5.0|cord-4.1|cord-4.0)$'
-    modern-branches-regexp: '^(master|cord-6.0)$'
+    modern-branches-regexp: '^(master|cord-6.0|cord-6.1|seba-1.0)$'
     platform-branches-regexp: '^(master|cord-6.1)$'
     seba-branches-regexp: '^(master|seba-1.0)$'