Modify flake8 config to exclude migrations

2 jobs from DEV in 16 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Lint
failed #1065
flake8

00:16

 
  Test
skipped #1066
test
 
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