Pin all dependent requirements

requirements/edx/base.txt

@@ -138,7 +138,7 @@ feedparser==5.1.3
 firebase-token-generator==1.3.2
 fs-s3fs==0.1.8
 fs==2.0.18
-future==0.17.0            # via pyjwkest
+future==0.17.1            # via pyjwkest
 futures==3.2.0 ; python_version == "2.7"
 glob2==0.3
 gunicorn==19.0

requirements/edx/development.txt

@@ -171,7 +171,7 @@ fs-s3fs==0.1.8
 fs==2.0.18
 funcsigs==1.0.2
 functools32==3.2.3.post2
-future==0.17.0
+future==0.17.1
 futures==3.2.0 ; python_version == "2.7"
 fuzzywuzzy==0.17.0
 glob2==0.3

requirements/edx/testing.txt

@@ -165,7 +165,7 @@ fs-s3fs==0.1.8
 fs==2.0.18
 funcsigs==1.0.2           # via pytest
 functools32==3.2.3.post2  # via parsel
-future==0.17.0
+future==0.17.1
 futures==3.2.0 ; python_version == "2.7"
 fuzzywuzzy==0.17.0
 glob2==0.3