Move wsgi.Service socket creation into the constructor.

This allows wsgi.Service to be used with service.ProcessLauncher

Fixes Bug #1156182

Change-Id: I71714d243c8a1b90c7bc1006ca2ad1e8c4b30e57
Replaces standard logging with common logging

Common modules can now safely import other common modules
since update.py will automatically install dependencies.

Change-Id: I0ad12d7e6e623657c40659aca4148439cd03d3fa
Replaces the standard uuid with common in the context module

Common modules can now safely import other common modules
since update.py will automatically install dependencies.

Change-Id: I9fca5959581ae4f4ab3da20caabbe9c0d53247b6
Removes created_at, updated_at from ModelBase

Created a 'TimestampMixin' class.
Next step is to update Nova which is the only project using oslo.db

Fixes bug #1119702

Change-Id: I1ffcc09a2971e6e6102da7ecb855a2837a159baf
Merge "Replaces the standard uuid with common in the context module"
Merge "Replaces standard logging with common logging"
Merge "Removes created_at, updated_at from ModelBase"
Removes metadata from ModelBase

Next step is adding metadata to nova.db.sqlalchemy.models.NovaBase

Fixes bug #1119699

Change-Id: I306a061e0b17660f612a111067ac618342f4ee99
Improve Python 3.x compatibility

Mechanical translation of deprecated constructs
to 3.x compatible variants.

Change-Id: I4988d0ac656903e0d0320aaa8361d4eeb774a0f9
Merge "Move wsgi.Service socket creation into the constructor."
Merge "Improve Python 3.x compatibility"
Use print_function __future__ import

Rather than continuing to use the old print statement, use the actual
print function introduced in python 2.6. See:

  http://docs.python.org/2/whatsnew/2.6.html#pep-3105-print-as-a-function

Change-Id: I059d982d60e13f13e1caf49509c0fe0b18eda723
Merge "Use print_function __future__ import"