Merge pull request #19 from nebula-orchestrator/dependabot/pip/certifi-2019.6.16

Bump certifi from 2019.3.9 to 2019.6.16

Author: naorlivne

requirements.txt

@@ -1,5 +1,5 @@
 bleach==3.1.0
-certifi==2019.3.9
+certifi==2019.6.16
 chardet==3.0.4
 docutils==0.14
 idna==2.8