travis: update test dependencies, use psycopg2-binary

.travis.yml

@@ -56,6 +56,7 @@ cache:
 addons:
   apt_packages:
     - ccache
+    - libffi-dev
     - libmysqlclient-dev
     - libpq-dev
     - libssl-dev

tox.ini

@@ -2,13 +2,13 @@
 # Checkers are not run implicitly.
 [flake8]
 exclude = *.egg*,.env,.git,.hg,.tox,_*,build*,dist*,venv*,six.py,mock.py,eventlet/green/http/*,eventlet/support/dns/*,eventlet/support/monotonic.py
-ignore = E261,W503
+ignore = E261,E402,E731,W503
 max-line-length = 101
 
 [pep8]
 count = 1
 exclude = *.egg*,.env,.git,.hg,.tox,_*,build*,dist*,venv*,six.py,mock.py,eventlet/green/http/*,eventlet/support/dns/*,eventlet/support/monotonic.py
-ignore = E261,W503
+ignore = E261,E402,E731,W503
 max-line-length = 101
 show-source = 1
 statistics = 1
@@ -24,9 +24,9 @@ setenv =
     {[testenv]setenv}
     eventlet_test_ipv6 = 1
 deps =
-    coverage==4.3.1
+    coverage==4.5.1
     nose==1.3.7
-    setuptools==32.3.1
+    setuptools==38.5.1
 commands =
     nosetests --verbose {env:tox_cover_args} \
         tests.backdoor_test:BackdoorTest.test_server_on_ipv6_socket \
@@ -38,7 +38,7 @@ basepython = python2.7
 setenv =
     {[testenv]setenv}
 deps =
-    pep8==1.5.6
+    pep8==1.7.1
 commands =
     pep8 benchmarks/ eventlet/ tests/
 
@@ -60,15 +60,16 @@ basepython =
     py37: python3.7
     pypy: pypy
 deps =
-    coverage==4.3.1
+    coverage==4.5.1
     nose==1.3.7
-    setuptools==32.3.1
-    py{26,27}: subprocess32==3.2.7
-    py{26,27}-{selects,poll,epolls}: MySQL-python==1.2.5
     py26-{selects,poll,epolls}: pyopenssl==0.13
+    pypy: psycopg2cffi-compat==1.1
+    py{26,27,33,34,35,36,37}: psycopg2-binary==2.7.4
+    py{26,27}-{selects,poll,epolls}: MySQL-python==1.2.5
+    py{26,27}: subprocess32==3.2.7
     py{27,33,34}-{selects,poll,epolls}: pyopenssl==17.3.0
-    {selects,poll,epolls}: psycopg2cffi-compat==1.1
-    {selects,poll,epolls}: pyzmq==13.1.0
+    setuptools==38.5.1
+    {selects,poll,epolls}: pyzmq==17.0.0
 commands =
     nosetests --verbose {env:tox_cover_args} {posargs:tests/}
     coverage xml -i