Try to turn off double-testing of Drush PRs on Travis.

[greg-1-anderson]

Let's see if it works.

[greg-1-anderson]

@weitzman: Seems to work. Do we want to still test EOL branches, like 6.x and 5.x? What about 8.0.x? Any others?

[weitzman]

We had this before (its still in 7.x branch). I think I removed it when messing around with drush.phar deployment. Perhaps the branches directive stopped testing of tags and thus stopped auto-upload of the phar. I'm a bit wary of putting this back.

[greg-1-anderson]

Hm. The docs on deploy say that deploy tasks run on tags only, so the branches config should not affect that. The branches configuration allows regular expressions; don't know that that helps us.

Seems like it should work, but up to you whether or not you want to merge it.

[weitzman]

Lets leave as is. I ran into issues like travis-ci/travis-ci#2111.

[greg-1-anderson]

Okay, so it looks like branches inadvertently applies to tags as well. We could use a regex that matched N.N.N, and it would probably work.

Maybe I'll reopen later with an updated patch if I test this on some other repo first.