Migrate to oslo.db

Move from oslo-incubator db module to oslo.db

Change-Id: I485375e3defc807e1fc272803a064b2c52e8ac13
Create a new revision of HOT for Juno

The next revision of HOT, dated 2014-10-16 to coincide with the Juno
release date, will support the list_join function and remove support for
the CFN-style functions. There may also be other changes throughout the
Juno development cycle.

Change-Id: I20d9586201806ac34e303689660ff565cb9f2b5c
Refactor ResourceGroup's FnGetAtt()

Change-Id: I424e4ce67bbc04739e028dfbe197595e4c6254f8
Remove tools/glance-jeos-add-from-github.sh

glance-jeos-add-from-github.sh has not been edited since 2012-08-20, and
its image links have been broken (according to Google cache) for a
minimum of 9 months.

The functionality of the script seems to be superceded by the
handy-dandy diskimage-builder tool.

See http://docs.openstack.org/developer/heat/getting_started/jeos_building.html
for more info about diskimage-builder workflow.

Change-Id: I99880f1cca4af84fa7193d749a7c8f6957bb0b78
Partial-Bug: 1338066
Use config region_name_for_services for rackspace clients

This deletes the region_name configuration option and replaces
uses with region_name_for_services.

There is no need for a different configuration option
for rackspace clients.

Change-Id: I6866026a0b9a1895b9b062e9c49e0fe54ec8e831
Move network constraint to neutron plugin

This allows exception imports to be encapsulated inside the neutron
plugin, and plugins are likely the most appropriate place for
custom constraints to live.

Change-Id: I5766edb305b7cfffdcd8943fb6edce7f3e9ff26d
Move glance_utils functions to glance client plugin

The glance client plugin is a more obvious home for this sort
of function, and this change makes mocking of these functions
much easier since a mocked client is no longer needed.

To access the methods defined in the client plugin the method
Resource.client_plugin has been added. When all clients are
contributed by plugins then method Resource.client will call
Resource.client_plugin.

glance_utils can be deleted since it was only added at the
beginning of the Juno cycle.

The image constraint has also been moved to the glance plugin.

Change-Id: Id31ccd605411ca034addc67d8aadf7cea0904bfd
Move the Stack class into stack.py

Stack is one of the most important classes in our project
and it is in a module with seemingly an unrelated name.
The name is historical, it started off been an assortment of functions
that parsed the template and much of the original content has
been moved out bit by bit into specialized modules leaving the Stack
class behind. This patch will hopefully complete the job by putting
the Stack class into the stack module.

More changes are to come to make sure that the users of the parser module
migrate to using the template and stack modules directly.

Change-Id: I81f8ed05e6dc7f14ec093cf2178f3ab5e3e4dda0
Merge "Use config region_name_for_services for rackspace clients"
Merge "Create a new revision of HOT for Juno"
Merge "Move the Stack class into stack.py"
Merge "Migrate to oslo.db"
Merge "Move network constraint to neutron plugin"
Merge "Remove tools/glance-jeos-add-from-github.sh"
Merge "Refactor ResourceGroup's FnGetAtt()"
Merge "Move glance_utils functions to glance client plugin"