Disable ceilometer.compute.nova_notifier driver

It appears that the ceilometer nova notification driver is causing
nova-compute to hang.  The last thing nova-compute logs before hanging
is a line from this driver.  At the very least the ceilometer nova
notification keeps stacktracing.

Change-Id: Ic375272b751159a64777ca73c1b64515195aacfb
Related-Bug: #1221987
lib/tempest remove whitebox section

tempest whitebox tests are removed from the tempest repo, so it's
configuration is unnecessary.

Change-Id: I6659e2af894014518a486f411ca06179d43bbb8b
Merge "Disable ceilometer.compute.nova_notifier driver"
Merge "lib/tempest remove whitebox section"