nodedev_create_destroy test doesn't SKIP

[cevich]

Came in via #983, the error is: 'raise error.TestFail("No HBAs to support vHBA on the host!")'. This should be error.TestNAError(...) if possible, since it's a test environment/setup problem. Environment:

Lenovo T530, 4 CPUs (dual-core + HT), 8G ram
Latest hand-build of libvirt (almost 1.1.4)
Running as root, SELinux in permissive mode
Default bridge mode networking
Default JeOS 19 x86_64 guest

Assigning to @chuanchang since it's his test. Let me know if you need help fixing this.

[chuanchang]

@cevich, yes, it requires hardware support for this testing, the "TestNAError" is an expected error, I will fix and test it.