Fixed call to _log_error for network allocation issues

If an exception occurs during the network allocation of a launched
instance then _log_error is called. However, it was being called
incorrectly. This fixes up the call so that it'll work.

Change-Id: Id9d656b70a27af969e646e21d3412c743791645f
Fix blessing with old novaclient

Change-Id: I409f30c9b173921ee6e4a19de534a5371dc4819e
Merge "Fix blessing with old novaclient" into stable/essex
Added test of blessing instance with params=None

Change-Id: I3380a1d70acfa705d5d125fb17f5413c9c679aed
Add back the custom timeouts for some RPC calls

Fixes OS-121

A merge from stable/diablo seemed to remove the custom timeouts
on the RPC calls. This brings back that functionality.

Change-Id: I33e16363874a42d86df8608bfdec02cabecdca10
Merge branch 'stable/essex' into stable/folsom-essex-merge

Change-Id: I19a1e3e3ec3be3efeac18fdbc800a4aa03121bdf