Disallow non-admin users update net's shared attribute

Currently non-admin user cannot create a network with
shared=True. But the user can create the network and then
change the shared attribute to True.

This patch will no longer allow non-admin user to update a
network's shared value to True.

Change-Id: Id596ee399c56b9882efab97a89dbf7d14c5cf7f4
Closes-Bug: 1268823
add quota support for ryu plugin

This patch adds Quota extension support to Ryu plugin and db migration
script.

Closes-Bug: #1266650
Change-Id: I4328ebf7bf307390461807bd8bb3318ac2f64845
Fix misspellings in neutron

Fix misspellings detected by:
* pip install misspellings
* git ls-files | grep -v locale | misspellings -f -

Change-Id: I93d9e2a65b0c1d1d801cae59b74d7258fbdb17dc
Closes-Bug: #1257295
ML2 plugin cannot raise NoResultFound exception

The ML2 plugin cannot raise NoResultFound exception because it does not
use the correct sqlalchemy library:
'from sqlalchemy import exc as ...' instead of 'from sqlalchemy.orm
import exc as ...'

Closes-Bug: #1277914
Change-Id: If3819adc62b9254f0c08eea6dcfcf5f06288e20e
Fix binding:host_id is set to None when port update

when updating a port 'binding:host_id' is reset if not specified among
the parameter to be updated. As a result, a None value for
'binding:host_id' is sent from the notifier which might potentially
cause consumers to not work properly.

Closes-Bug: #1245310
Change-Id: Icfb5179940cca9f8a705eb36bdbfcbc8a421a272
Merge "Fix misspellings in neutron"
Merge "Disallow non-admin users update net's shared attribute"
Merge "add quota support for ryu plugin"
Merge "ML2 plugin cannot raise NoResultFound exception"
Merge "Fix binding:host_id is set to None when port update"