Add docs Frankfurt jobs

Issue-ID: CIMAN-33
Signed-off-by: Jessica Wagantall <jwagantall@linuxfoundation.org>
Change-Id: I6263743a137896f4e15374718f7d257591929b47
diff --git a/jjb/doc/doc.yaml b/jjb/doc/doc.yaml
index f03cce0..636c3d2 100644
--- a/jjb/doc/doc.yaml
+++ b/jjb/doc/doc.yaml
@@ -30,6 +30,8 @@
           branch: 'dublin'
       - elalto:
           branch: 'elalto'
+      - frankfurt:
+          branch: 'frankfurt'
 
 - project:
     name: doc-info