Fix linter errors
Lint
flake8
./recircle/interface_openstack/implementation/network/openstack_network_manager.py:13:49: F821 undefined name 'Network'
./recircle/interface_openstack/implementation/network/openstack_network_manager.py:14:16: F821 undefined name 'Network'
./recircle/interface_openstack/implementation/network/openstack_network_manager.py:22:25: F821 undefined name 'Network'
./recircle/interface_openstack/implementation/network/openstack_network_manager.py:22:25: F821 undefined name 'Network'
./recircle/interface_openstack/implementation/network/openstack_network_manager.py:27:35: F821 undefined name 'Network'
./recircle/interface_openstack/implementation/network/openstack_network_manager.py:27:35: F821 undefined name 'Network'
./recircle/interface_openstack/implementation/network/openstack_network_manager.py:35:46: F821 undefined name 'Network'
./recircle/interface_openstack/implementation/network/openstack_network_manager.py:35:46: F821 undefined name 'Network'
ERROR: Job failed: exit code 1