fix osxkeychain ci

Signed-off-by: Nassim 'Nass' Eddequiouaq <[email protected]>

Author: n4ss

.travis.yml

@@ -10,6 +10,11 @@
     email: false
   go:
     - 1.8
+  before_install:
+    # work-around for issue https://github.com/travis-ci/travis-ci/issues/6307
+    # might not be necessary in the future
+    - command curl -sSL https://rvm.io/mpapis.asc | gpg --import -
+    - rvm get stable
   install: make deps
   addons:
     apt: