.travis.yml: branches only for travis-ci

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@64666 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2018-09-09 12:48:32 +00:00 · 2018-09-09 12:48:32 +00:00 · c3c73ba2bd
--- a/.travis.yml
+++ b/.travis.yml
@ -79,6 +79,7 @@ branches:
    - ruby_2_5
    - /^feature\//
    - /^bug\//
+    - /^travis-/

 # We want to be notified when something happens.
 notifications: