Added Python 3.7 to the build matrix (#908)

* Run tests with Python 3.7.

* Add missing dependencies.

* Show skip reasons.

* Add more dependencies to CI tests.

* Fix requirements.

.travis.yml

@@ -20,6 +20,11 @@ matrix:
       env: TOXENV=3.5
     - python: 3.6
       env: TOXENV=3.6
+    - python: 3.7
+      env: TOXENV=3.7
+      sudo: true
+      dist: xenial
+      before_install: sudo apt-get update && sudo apt-get install libgnutls-dev
     - python: pypy
       env: TOXENV=pypy
     - env: TOXENV=flake8

requirements/docs.txt

@@ -1,3 +1,2 @@
 git+https://github.com/celery/sphinx_celery.git
-librabbitmq
 -r extras/mongodb.txt

requirements/test-ci.txt

@@ -4,4 +4,7 @@ redis
 PyYAML
 msgpack-python>0.2.0
 -r extras/sqs.txt
+-r extras/consul.txt
+-r extras/librabbitmq.txt
+-r extras/zookeeper.txt
 sqlalchemy

tox.ini

@@ -25,7 +25,7 @@ deps=
     flake8,flakeplus,pydocstyle: -r{toxinidir}/requirements/pkgutils.txt
 
 commands = pip install -U -r{toxinidir}/requirements/dev.txt
-           pytest -xv --cov=kombu --cov-report=xml --no-cov-on-fail {posargs}
+           pytest -rxs -xv --cov=kombu --cov-report=xml --no-cov-on-fail {posargs}
 
 basepython =
     2.7,flakeplus,flake8,apicheck,linkcheck,cov,pydocstyle: python2.7