Enabling flake8 verifications in tox.ini and adding import sorting.
All the plugins have been fixed for flake8 errors and the imports
have been sorted.

Change-Id: Icdefe9a877e891a683cc833315e4c3f94fffbab9
Signed-off-by: sousaedu <eduardo.sousa@canonical.com>

Change-Id: I86e6a102b5bf2e0221b29096bbb132ca656844c5
Signed-off-by: sousaedu <eduardo.sousa@canonical.com>

This patchset fixes bug 1437. There will need to be done extra
changes to make logging better.

Change-Id: I2b0e477093eba798c6cd4ce7bcc105ee78b610ed
Signed-off-by: sousaedu <eduardo.sousa@canonical.com>

contains base packabe, dummy and failing connectors

All plugins will require this package instead of osm_ro
In that way plugin development is more independent
from main project, and it can be re-used in other projects.
For example openvim can use these SDN plugins without importing osm_ro

Change-Id: I9b598fdca269f04391e731cd07bb244f3918635d
Signed-off-by: tierno <alfonso.tiernosepulveda@telefonica.com>

Change-Id: I3160b7705e9acea83d3cf2a22beebafc32d4ef4a
Signed-off-by: tierno <alfonso.tiernosepulveda@telefonica.com>

Change-Id: I2e08ce7aa04f3e61adcf866925bf235b53e15baf
Signed-off-by: tierno <alfonso.tiernosepulveda@telefonica.com>