Added taskflow in requirements.txt
Update flake8 up to v2.2.2 which respects NOQA
Add six in requirements.txt
Describe simple tasks for migration identity
Start describing of taskflow integration details
Add part with tasks, flows and factories
Remove store manipulations from flow factories
Fix repairing of users' passowrds
Renamed RepaireUserPasswords class
Add tasks and flow for migration of flavors
Revert "Remove store manipulations from flow factories"

This reverts commit a541bca81a5c56e3d4ad99691ccaa9351f234c67.

Conflicts:
	pumphouse/flows.py
Add task and flow for images
Add floating ip migration tasks

Adds tasks and a flow for migration of floating IP and assigning a
floating IP to server.
Add flow to assign floating ip to server
Fix multiple issues
Comply to review comments
Modify floating ip migration tasks and flows

Support Nova Network FlatDHCP manager: assign Floating IP to the
first virtual interface of the server.
Glance client returns generators on listing ops
Fix dependencies for migration of image
Add tasks and flows for migration servers