Upgrade package requires for python-request to 2.20.0 closes-jira-bug: CEM-6370
Upgrade package requires for python-request to 2.20.0
closes-jira-bug: CEM-6370

Change-Id: Id7e7c3d15033421ed63f367852291e5abe800f4a

Juniper/contrail-packages,Juniper/contrail-packages