Cross-build avatars-* for Gerrit 2.14

Change-Id: Ic21da15599f2a25a3b01ca717ea9d49d2de289f1
diff --git a/jenkins/gerrit-buck-bazel-plugin-avatars-external.yaml b/jenkins/gerrit-buck-bazel-plugin-avatars-external.yaml
index ca9413a..c5abd1b 100644
--- a/jenkins/gerrit-buck-bazel-plugin-avatars-external.yaml
+++ b/jenkins/gerrit-buck-bazel-plugin-avatars-external.yaml
@@ -4,6 +4,9 @@
       - 'plugin-{name}-{branch}':
           branch:
             - stable-2.13
-      - 'plugin-{name}-bazel-{branch}':
+      - 'plugin-{name}-bazel-{branch}-{gerrit-branch}':
           branch:
             - master
+          gerrit-branch:
+            - master
+            - stable-2.14
diff --git a/jenkins/gerrit-buck-bazel-plugin-avatars-gravatar.yaml b/jenkins/gerrit-buck-bazel-plugin-avatars-gravatar.yaml
index 7c0415c..4c11006 100644
--- a/jenkins/gerrit-buck-bazel-plugin-avatars-gravatar.yaml
+++ b/jenkins/gerrit-buck-bazel-plugin-avatars-gravatar.yaml
@@ -4,6 +4,9 @@
       - 'plugin-{name}-{branch}':
           branch:
             - stable-2.13
-      - 'plugin-{name}-bazel-{branch}':
+      - 'plugin-{name}-bazel-{branch}-{gerrit-branch}':
           branch:
             - master
+          gerrit-branch:
+            - master
+            - stable-2.14