tests: bondHwAddress, safeNetworkConfig, volatileConfig

Added three functional tests:

* testBondHwAddress
* testSafeNetworkConfig
* testVolatileConfig

Change-Id: I2b035155ef715d8456d9c4658ad2cb7ee76c80d0
Signed-off-by: Giuseppe Vallarelli <gvallare@redhat.com>
Signed-off-by: Dan Kenigsberg <danken@redhat.com>
Reviewed-on: http://gerrit.ovirt.org/17640
Reviewed-by: Mark Wu <wudxw@linux.vnet.ibm.com>