Add conversion types in some strings

Some strings have no conversion types
for 'String Formatting Operations'.

Change-Id: I2c6176954643a93898ff2d06d686793fb0977458
Closes-Bug: #1289230
Add libffi-dev to list of packages to install in dev env

libffi-dev is needed by cffi

Change-Id: Ib91bd2e1a1005dc96f9d9054ae5cb150c5fae7db
Fixed nova VM live migration issue with 3PAR

Nova bypasses the cinder checks for a volume
being available, when it tries to attach a volume
to a new host during live migration.  The assumption
in cinder to this point has been that volumes can only
be attached to one host.  The 3PAR driver worked under
that assumption.  This assumption fell apart during detach
time as the driver was only looking for a VLUN on the
entire 3PAR, since it assumed it could only exist on one host.

This patch ensures that the driver looks for the VLUN on the
hostname it expects.

Change-Id: Ie894ad386990794d270ca1cb72f40095bd40c2e6
Closes-Bug: 1288927
Sync log.py from oslo-incubator

This pulls in the latest version of log.py from oslo-incubator
which elminates the constant user_identity key error.

Note that this sync does a full sync, in other words it uses
the oslo update script and pulls in the log.py file and all
of the associated dependendencies for that module.

Current HEAD in OSLO:
--------------------
Merge: d9ea4f0 fd33d1e
Date:   Wed Mar 12 17:00:13 2014 +0000
Merge "Fix gettextutil.Message handling of deep copy failures"
--------------------

Change-Id: I7c9f8acd22787f9649a5a1e796238c7788a0484a
Fixes-Bug: 1290503
Merge "Fixed nova VM live migration issue with 3PAR"
Merge "Add libffi-dev to list of packages to install in dev env"
Merge "Sync log.py from oslo-incubator"
Merge "Add conversion types in some strings"
(Test commit) Change README to reflect Jio's fork of Cinder

Change-Id: I3f26c0a736e63725aec24ca2fa12c707b8e6460f