[ci lang-only Ruby] (#4524)

.travis.yml

@@ -103,7 +103,8 @@ env:
      - 'TESTDIR="Python/aiohttp Python/api_hour Python/blacksheep Python/bottle Python/cherrypy Python/django Python/eve Python/falcon Python/fastapi Python/flask"'
      - 'TESTDIR="Python/hug Python/japronto Python/klein Python/morepath Python/pyramid Python/quart Python/responder Python/sanic Python/spyne Python/starlette"'
      - 'TESTDIR="Python/tornado Python/turbogears Python/uvicorn Python/uwsgi Python/vibora Python/web2py Python/webware Python/weppy Python/wsgi"'
-     - "TESTLANG=Ruby"
+     - 'TESTDIR="Ruby/grape Ruby/h2o_mruby Ruby/hanami Ruby/padrino Ruby/rack Ruby/rack-sequel"'
+     - 'TESTDIR="Ruby/rails Ruby/roda-sequel Ruby/sinatra Ruby/sinatra-sequel"'
      - 'TESTDIR="Rust/actix Rust/gotham Rust/hyper Rust/iron Rust/saphir"'
      - 'TESTDIR="Rust/may-minihttp Rust/nickel Rust/rocket"'
      - 'TESTDIR="Rust/rouille Rust/thruster Rust/tokio-minihttp"'