Upgrade pytest to 3.8.0 and pytest-timeout to 1.3.2 (#16489)

requirements_test.txt

@@ -12,6 +12,6 @@ pylint==2.1.1
 pytest-aiohttp==0.3.0
 pytest-cov==2.5.1
 pytest-sugar==0.9.1
-pytest-timeout==1.3.1
-pytest==3.7.2
+pytest-timeout==1.3.2
+pytest==3.8.0
 requests_mock==1.5.2

requirements_test_all.txt

@@ -13,8 +13,8 @@ pylint==2.1.1
 pytest-aiohttp==0.3.0
 pytest-cov==2.5.1
 pytest-sugar==0.9.1
-pytest-timeout==1.3.1
-pytest==3.7.2
+pytest-timeout==1.3.2
+pytest==3.8.0
 requests_mock==1.5.2