VMWare driver to use current nova.network.model

* Updated tests to use classes from nova.network.model instead of legacy
  "network,mapping" tuple.
* Modified vmwareapi/{driver,vif,vmops}.py to use classes from
  nova.network.model instead of legacy "network,mapping" tuple.

Fixes: bug 1112655
Change-Id: I7f4b39cd5add7d3cf7dcf485eb9855d0354f332c
Check the length of flavor name in "flavor-create"

Fixes bug 1102280
The length of flavor name is defined 255 charaters in database.
But flavor name can be more than 255 characters when a flavor
is created. This patch adds the length check of flavor name.

Change-Id: If9db879e5f6340594b215b057a29d03c6fef1503
Merge "Check the length of flavor name in "flavor-create""
Merge "VMWare driver to use current nova.network.model"
OS-SI wip