Convert Floating IP bulk tests to httpretty

Change-Id: I4b81963ab6a9924c5f2262f49a42baa56326964d
blueprint: httpretty-testing
add tox target for python 3.4

Ubuntu 14.04 has python 3.4 so add a 3.4 target. 
Note that this will fail unless
you have new enough virtualenv. Recommend you install the packaged
version of 1.11.4 and get rid of any pip installed ones.

Change-Id: Ib54dc49fca2463f1c5cd788b48d06bd85be52655
adjust to {SHA1} convention for token

based on openstack-dev mailing list thread, support the {SHA1}
convention for headers that is generally agreed on.

Also fix a minor issue that Johannes found after the review landed,
which was doing substring matching instead of tuple matching.

Change-Id: I80a456c765026ac6179fd424ead01715798c1dac
Add posargs support to flake8 call

Add posargs to flake8 call in tox.ini, with this you can pass arguments
directly into flake8 using the following notation
  tox -epep8 -- --FLAKE8-ARG

This can be used to pass arguments like '--statistics' to flake8

Change-Id: Ia820d62c4a1f428d60d88b04d8a4d9b1442baa09
Merge "add tox target for python 3.4"
Merge "Convert Floating IP bulk tests to httpretty"
Merge "Add posargs support to flake8 call"
Merge "adjust to {SHA1} convention for token"