Utilizes assertIsNone and assertIsNotNone

Using assertTrue and the 'is' operator to test if an element is None
is too python2.4. Our unit testing framework supports
assertIsNone and assertIsNotNone which were created
for these types of tests.

Fixes bug #1230028

Change-Id: Ia58d92c52d0aca9c22360dd44de19d4e5878ab13
Utilize assertIsInstance

Using assertTrue and the 'isinstance' function to test
if an object is in an instance of some class is too python2.4.
Our unit testing framework supports assertIsInstance which was created
for these types of tests. Let's use assertIsInstance for these tests.

Fixes bug #1230028

Change-Id: Ia03c9f19a1c5e2aef3a6fe530515bd26339a7975
MidoNet plugin, clean up dhcp entries correctly

When a subnet gets deleted, remove the proper dhcp entry, not
always the first one.

Change-Id: I4f152eed5a7dd408bda866cb304838989bdc363c
Solves-bug: #1233259
Enable Quota DB driver by default

Closes-Bug: #1189671

Quota driver is now loaded in lazy mode, i.e. the driver is loaded
the first time the driver is accessed. This is to make unit tests
work. Some unit tests like extension test cases need to use Config
Quota driver (previous default) but QuotaEngine is initialized
when quota.py is imported. Thus the unit tests had no chance to
specify quota_driver.

Change-Id: I9e20961d5a6322361e3c0284b3c2a7ca86755c70
Imported Translations from Transifex

Change-Id: I456053ae5de5a23eb1fbcc27f9654bb8e135155f
Radware LBaaS driver implementation

Change-Id: I43f666ed6716c16b0ef95bc7ed58c4c422a7fd89
Implemnts: blueprint radware-driver-for-lbaas
Merge "MidoNet plugin, clean up dhcp entries correctly"
Merge "Radware LBaaS driver implementation"
Merge "Imported Translations from Transifex"
Set correct plugin support in Embrane based plugins

Change-Id: I87480415f55894e17458a85ef7918babaceb5e47
Closes-Bug: 1236627
Disassociate floating IPs from port on terminate

Bugfix - floating IPs were left associated after VM
was terminated. Now call disassociate_floatingips
within delete_port as in other networking plugins.

Add L3NatDBIntTestCase suite to cover the
floating IP disassociation case, and fix all failing
tests from that suite.

Change-Id: I856c46631e495d513065fc9e987898408441a21e
Closes-Bug: #1231913
Merge "Utilizes assertIsNone and assertIsNotNone"
Imported Translations from Transifex

Change-Id: I4f7b102d72ac375e0c42eb1e23d777f25b93c17a
Merge "Enable Quota DB driver by default"
Merge "Utilize assertIsInstance"
Merge "Set correct plugin support in Embrane based plugins"
Merge "Imported Translations from Transifex"
Merge "Disassociate floating IPs from port on terminate"