The mock third party library was needed for mock support in py2
runtimes. Since we now only support py36 and later, we can use the
standard lib unittest.mock module instead.
Change-Id: I491ca9f482a00b7ca3fa44aa8c26ef73559c178f
Added three new modules for managing OVS, ODL and PCI devices. They
exist in the new charms_openstack/{sdn,devices} directories.
The modules have come from the
git@github.com:openstack/charm-openvswitch-odl.git charm and are
largely unaltered apart from new Doc strings and unit tests.
Change-Id: I3e44afeb866a7551883da04a699af3807853a83e
Hervé Beraud