Clean up a little cruft

OpenStack runs a git service now, so instead of linking to github URLs,
link to git.openstack.org.
Versions for pbr in setup.py actually wind up being an error (and a very
odd one) Remove them.
The setup hook in setup.cfg is no longer needed.

Change-Id: I8f48ac194e6c01e9bb06fa5df6f2b2bf28c01636
Update pbr usage

We've discovered that having versions in setup_requires leads to evil
and death. Also, the setup-hooks in setup.cfg are completely unnecessary
anymore.

Change-Id: I8878e635e0828bbddb81d9c6321a9f10ad3b89fe
Corrected usage of len(filter(...))

filter() returns an iterable, not a list on Python 3.

Change-Id: I8afb2962bcd193ab67017c98376359c0f28afc66
py33: 'dict_keys' object does not support indexing

In python 3, dict.keys() is a class of 'dict_keys', it does not
support indexing.

Cast the dict to list to get the "first" value of dict, which is
compatible with python 2&3.

Closes-Bug: #1229005

Change-Id: I561b7ada9e5ad936659a657b3161a9b93a15a788
Corrected several usage of keys() for Python 3

Under Python2 dict.keys() returns a list, under Python 3 it returns an
iterator. Some places assumed that if they called keys() then it was
safe to modify the dict in a loop. Corrected this by calling list().

Change-Id: I7638263f288dd20590bd751d09194a919b921545
py33: dict.keys() is not a list in python3

Cast the dict.keys() to list when comparing its value with list.

Closes-Bug: #1228993

Change-Id: I59d13258935de3e9286845f857eaa602a5b690fb
Make nova CLI use term "server" where possible

nova client was using terms "server" and "instance" interchangeably
which was very confusing.

This patch uses "server" where possible without touching the API.

Note that there are actions (instance-action, instance-action-list) and
arguments (--instance-name, --num-instances, ...) with "instance" in their
name which can't be changed easily.

Closes bug 1156648

Change-Id: I0570aa1c4dc9ad1852af307a2a4896f16073a6ab
Merge "Clean up a little cruft"
Merge "Corrected usage of len(filter(...))"
Merge "py33: 'dict_keys' object does not support indexing"
Merge "py33: dict.keys() is not a list in python3"
Merge "Corrected several usage of keys() for Python 3"
Merge "Update pbr usage"
Merge "Make nova CLI use term "server" where possible"