(2.13) hotplug: Is not supported for QEMU < 1.7
(2.13) hotplug: Is not supported for QEMU < 1.7

Change the bulk check of whether hotplug is supported or not.
Only versions >= 1.7 support the required qmp commands.

Signed-off-by: Dimitris Aragiorgis <4514117c4a99256e19437c7e3407c4ecbf98aec0@grnet.gr>
Reviewed-by: Hrvoje Ribicic <be5828fca31f89218048bec4189e30a581aa65da@google.com>

apyrgio/snf-ganeti,apyrgio/snf-ganeti