Adds python2 to general packages to be installed

devstack works only for python2 python3 will break the install.
This commit adds python2 to the general dependencies of ubuntu

Change-Id: I7721ff85a63f635ff798407a5ee1d6766405c683
Closes-Bug: #1188215
Neutron/NVP plugin: fix 'ip link' usage

Closes-bug: #1258141

Change-Id: Id26eca6c3174a108d1822440956ab7f66cc3ebd3
Define Q_L3_ENABLED=True for MidoNet plugin

Change-Id: Iabf7a5ff2e53b1822a327600da9acac8cf6a59f7
Merge "Define Q_L3_ENABLED=True for MidoNet plugin"
Merge "Adds python2 to general packages to be installed"
Merge "Neutron/NVP plugin: fix 'ip link' usage"
Merge branch 'master' of github.com:openstack-dev/devstack