Fix format errors seen in rpc logging

The previous commit for this bug didn't include the 'project_name'
key in the context dict.  The missing key was causing the amqp
module to generate log formatting exceptions instead of normal
log output.

Separately, the context module itself was generating logging
exceptions in the quantum service when logging was attempted
before the context was fully initialized

Change-Id: I0f4c6f5a6804442932c9b2bd409a258cfc2419ff
Closes-Bug: #1254530
Related-Bug: #1239923
Merge "Fix format errors seen in rpc logging"