set dist to uubntu trusty so python2.6 is found

Codeslayer666 · Codeslayer666 · commit 988553275787 · 2019-08-30T15:02:43.000+03:00
diff --git a/.travis.yml b/.travis.yml
@@ -15,3 +15,5 @@ script:
 matrix:
   allow_failures:
   - python: "nightly"
+
+dist: trusty
