Remove dependencies on pep8, pyflakes and flake8

They should be determined by the hacking dependency
implicitely.

Change-Id: I8805f7b0ef9f2b1f59be342e9c6d032330707688
Make swift-recon usable on hosts without IPv6

Fixes a bug when swift-recon --sockstat is used on hosts without
IPv6 support.

Tested by disabling IPv6 on Ubuntu 12.04 LTS:

Add "ipv6.disable=1" to GRUB_CMDLINE_LINUX_DEFAULT in /etc/default/grub
sudo update-grub
sudo /sbin/reboot

Closes-Bug: 1270711
Change-Id: Ib31a059e412ac68ca0a3faef4201fec7560d1178
Container Sync: Simple HTTP Proxy load balancing

Change-Id: I021b043b927153bacff48cae648d4d8c5bbad765
Add a way to ratelimit all writes to an account

This is in case a cluster gets a problem user who has distributed the
writes to a bunch of containers but is just taking too much of the
cluster's resources.

Change-Id: Ibd2ffd0e911463a432117b478585b9f8bc4a2495
Merge "Make swift-recon usable on hosts without IPv6"
Merge "Container Sync: Simple HTTP Proxy load balancing"
Attempt to fix periodic memcache timeout test

Not sure this will really fix the issue, but made a small change that
seemed to make more sense for the flow of the test.

Closes-Bug: #1272503
Change-Id: Ifb25ed7c4a42b11f74d865787f63fea4e0beb745
Merge "Add a way to ratelimit all writes to an account"
Merge "Attempt to fix periodic memcache timeout test"
Merge "Remove dependencies on pep8, pyflakes and flake8"