storage: Need to add virCommandFree()
storage: Need to add virCommandFree()

https://bugzilla.redhat.com/show_bug.cgi?id=906299

(cherry picked from commit 5e556b60c9495fb263d67bb19d09f63e252bd587)

mithleshvrts/libvirt-0.10.2,mithleshvrts/libvirt-0.10.2,mithleshvrts/libvirt-0.10.2,mithleshvrts/libvirt-0.10.2,mithleshvrts/libvirt-0.10.2