replace NovaException with VirtualInterfaceCreate when neutron fails

Currently NovaException is being raised by the _neutron_failed_callback()
and being treated in a try..except block that wraps the _crate_domain method.
The exception is too generic and will catch any exceptions, which are
subclasses of NovaException (for example: ObjectActionError),
making the domain variable not be defined and will mask the original exception.

Suggesting to raise and catch the VirtualInterfaceCreateException and
treat the domain destroy and cleanup with save_and_reraise_exception
in the except block.

Conflicts:
        nova/virt/libvirt/driver.py

Related-Bug: #1337860

Change-Id: Ic972e286ded4e8b9d79ce1b0aa514bb4623d5f0b
(cherry picked from commit f0388d6fec0c4830c730af1adb3d02027eb2cd1d)
Merge "replace NovaException with VirtualInterfaceCreate when neutron fails" into stable/icehouse