Update django from 1.11.1 to 1.11.2 (#2526)

requirements/common.txt

@@ -32,9 +32,9 @@ Brotli==0.6.0 \
     --hash=sha256:c0fa11e2dfe66cc61f5b1cdab143f47d2ee426dc4f2cc66bb923a17e855559c0 \
     --hash=sha256:880dc9e843b747b6428eb7c2333cf7fa56010e496e603e0fa1eb1921eab24f42
 
-Django==1.11.1 \
-    --hash=sha256:bb3109a31cfa016e5f234223665f80fc06107f2169afb9f6dc8828295db73547 \
-    --hash=sha256:bbcefdf822eeef2cd04718ebcc24dd2ecf47407258cfcde2b4f95df57ce33a8c
+Django==1.11.2 \
+    --hash=sha256:cbd3944599086518cdcf3235e90230c8b8a9c5476b20447ee57b313dba14f67a \
+    --hash=sha256:3c5b070482df4f9e5750539dc1824d353729ee423fd410c579b8cd3dea5b0617
 
 celery==3.1.25 \
     --hash=sha256:1954a224805f3835e5b6f5998ec9fe51db3413cc49e59fc720d314c7913427cf \