Merge pull request #17455 from edx/estute/jenkins-ff-57-b

Support firefox 59 upgrade for CI and local testing

requirements/edx/base.txt

@@ -169,7 +169,7 @@ sqlparse>=0.2.0,<0.3.0
 
 # Used for testing
 before_after==0.1.3
-bok-choy==0.7.1
+git+https://github.com/edx/bok-choy@215b0bde2b0cd94dec3e9d2620aa8e44f4ee249d#egg=bok-choy==0.7.1
 
 chrono==1.0.2
 ddt==0.8.0
@@ -191,7 +191,7 @@ PyContracts==1.7.1
 python-subunit==0.0.16
 pyquery==1.2.9
 radon==1.3.2
-selenium==3.3.1
+selenium==3.11.0
 splinter==0.5.4
 testtools==0.9.34
 testfixtures==4.5.0