Fix the missing openssl requirement

admin/requirements-prod.txt

@@ -1,9 +1,12 @@
 alembic==0.9.5
 APScheduler==3.3.1
+asn1crypto==0.22.0
 Babel==2.5.1
 certifi==2017.7.27.1
+cffi==1.11.0
 chardet==3.0.4
 click==6.7
+cryptography==2.0.3
 decorator==4.1.2
 docker-py==1.10.6
 docker-pycreds==0.2.1
@@ -25,6 +28,8 @@ Jinja2==2.9.6
 Mako==1.0.7
 MarkupSafe==1.0
 passlib==1.7.1
+pycparser==2.18
+pyOpenSSL==17.3.0
 python-dateutil==2.6.1
 python-editor==1.0.3
 pytz==2017.2