remove travis, move to github actions

.github/workflows/tests-unit.yml

@@ -20,6 +20,6 @@ jobs:
       run: |
         python -m pip install --upgrade pip
         pip install tox tox-gh-actions coveralls
-        bash ryu/tests/integrated/common/install_docker_test_pkg_for_travis.sh
+        bash ryu/tests/integrated/common/install_docker_test_pkg_for_github_actions.sh
     - name: Test with tox
       run: NOSE_VERBOSE=0 tox

.travis.yml

@@ -1,40 +0,0 @@
-dist: bionic
-
-language: python
-
-matrix:
-  include:
-    - python: 3.6
-      env: TOX_ENV=pycodestyle
-    - python: 3.6
-      env: TOX_ENV=py36
-    - python: 3.6
-      env: TOX_ENV=autopep8
-
-    - python: 3.5
-      env: TOX_ENV=py35
-
-    - python: 3.7
-      env: TOX_ENV=py37
-
-    - python: 3.8
-      env: TOX_ENV=py38
-
-# This is disabled because of trouble running on travis CI.
-#    - python: pypy
-#      env: TOX_ENV=pypy
-
-services:
-  - docker
-
-sudo: required  # Required to enable Docker service
-
-install:
-  - pip install tox coveralls
-  - bash ryu/tests/integrated/common/install_docker_test_pkg_for_travis.sh
-
-script:
-  - NOSE_VERBOSE=0 tox -e $TOX_ENV
-
-after_success:
-  - coveralls

CONTRIBUTING.rst

@@ -30,9 +30,9 @@ features (it's not a must though).
 
 Python version and libraries
 ============================
-* Python 2.7, 3.5, 3.6, 3.7:
+* Python 3.5, 3.6, 3.7, 3.8:
 
-  Ryu supports multiple Python version.  CI tests on Travis-CI is running
+  Ryu supports multiple Python versions.  CI tests on GitHub Actions is running
   on these versions.
 
 * standard library + widely used library: